DRC J-Mini Pro User manual

DIAMTECH RESEARCH CENTRE PRIVATE LIMITED
J-Mini Pro©
User Manual v 1.0.1
Quick Start Guide
and
User Manual version 1.0.1
Introduction
J-Mini Pro has been developed and designed for the efficient and productive identification of CVD and HTHP
laboratory grown diamonds, either as loose stones or in diamond-set jewelry. Laboratory grown diamonds
(LGD) are visually indistinguishable from natural diamonds and the supply pipeline is contaminated by the
undisclosed intrusion of LGD into every part of the jewelry industry.
Because all concerned interests in the jewelry industry desire to represent their products fairly and honestly, it
is necessary to have some type of device that detects laboratory grown diamondsto prevent any possible
confusion or misrepresentation. J-Mini Pro is the latest device designed to identify laboratory grown diamonds.
Consumers have a fundamental right to know about the origins of the products that they purchase. J-Mini Pro
allows the Retailer, Wholesaler, and Manufacturer to verify the content of the merchandise that they sell.
J-Mini Pro is a machine that can facilitate the screening process for CVD and HTHP laboratory grown
diamonds to protect consumers from undisclosed LGD. This manual is a guide in the effective, efficient, and
safe use of this instrument. Please review it carefully before the use of the instrument.
CONFIDENTIAL
The information contained herein is the property of DRC.
Any reproduction, publication, or distribution to a third party is strictly forbidden.

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Table of Contents
1 Safety First ..................................................................................................................................................................... 3
1.1 Symbol Notations and Definitions ........................................................................................................................ 3
1.2 Caution –Laser Radiation ..................................................................................................................................... 4
2 Physical Specifications, Designed Functions, Capabilities and Features .................................................................. 5
3 J-Mini and Included Accessories................................................................................................................................... 5
4 Set Up (no tools are required for assembly) ................................................................................................................. 7
4.1 Un-boxing................................................................................................................................................................ 7
4.2 Inventory the Contents .......................................................................................................................................... 7
4.3 Set Up the J-Mini Pro Machine ............................................................................................................................... 7
4.4 Limitations.............................................................................................................................................................. 7
5 Initial Start-Up .............................................................................................................................................................. 7
5.1 Mobile Device.......................................................................................................................................................... 8
5.2 System Setup .......................................................................................................................................................... 9
6 J-Mini Pro Program Desktop......................................................................................................................................... 11
6.1 Navigating the J-Mini Pro Desktop ...................................................................................................................... 12
7 Preparing for Merchandise Scanning ......................................................................................................................... 13
7.1 Step 1..................................................................................................................................................................... 13
7.2 Preparing to Scan ................................................................................................................................................. 14
7.3 Scanning................................................................................................................................................................ 15
8 Scanning Results Analysis .......................................................................................................................................... 16
8.1 Automated Scanning Results: What You See ..................................................................................................... 16
8.2 Basic Detection Results........................................................................................................................................ 16
9 Observing and Interpreting Scanned Results ............................................................................................................ 17
9.1 Understanding Scan Results ............................................................................................................................... 17
9.2 Basic Scanning Diamond Identification.............................................................................................................. 18
9.3 Advanced Scanning Interpretation ..................................................................................................................... 19
9.4 Stage One Advanced Analysis ............................................................................................................................. 19
9.5 Stage Two Advanced Analysis ............................................................................................................................. 21
10 Additional Features and Viewing Options ............................................................................................................. 21
10.1 Split-Screen Analysis ....................................................................................................................................... 22
10.2 Additional Features.......................................................................................................................................... 23
10.3 Archived Scans and Reports ............................................................................................................................ 24
11 Maintenance and Support ....................................................................................................................................... 26
11.1 Warranty Claim Process .................................................................................................................................. 26
11.2 Software License............................................................................................................................................... 26
12 Warranty................................................................................................................................................................... 29

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12.1 Limited Warranty ............................................................................................................................................. 29
12.2 Exclusion ........................................................................................................................................................... 29
12.3 Terms and Conditions ...................................................................................................................................... 29
12.4 Privacy............................................................................................................................................................... 32
12.5 Machine Maintenance Policy ........................................................................................................................... 32
12.6 Machine Service Policy..................................................................................................................................... 32
12.7 Using Third-Party Apps And Services Policy ................................................................................................. 32
1Safety First
At DRC, the safety of everyone who uses our instruments is important. We recommend reading the safety
information and operating instructions before operating J-MiniPro. Failure to observe these instructions can
lead to injury, damage to the device, and less than optimal operating results.
J-Mini Pro has been designed to be operated safely and effectively by conscientious operators who observe the
safety and operational protocols explained in this document.
1.1 Symbol Notations and Definitions
Please observe the written and graphic cautions and warnings explained in this manual
J-Mini Pro, its hardware and operating software are the exclusive property of DRC, Surat, India. The
purchase of a J-Mini Pro includes only a license to operate the proprietary software that we have developed.
Altering or copying the software is prohibited. It may result in the degradation of the software program
and danger to the user. Tampering with the software or hardware may result in damage and inoperability
of the instrument and also result in the injury of the operator. Tampering with J-Mini Pro also voids the
warranty or the obligation of DRC to maintain or support the operation of J-Mini Pro.

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Symbol
Description
This symbol indicates possible software damage or loss of data that may
occur and result in a permanent loss of stored information. Attention is
required by an authorized DRC technical specialist.
This symbol indicates potential exposure to rays of invisible laser radiation.
Avoid exposing eyes and skin to direct or scattered radiation. Proper eye
and skin protection is required.
To reduce the risk of electric shock or damage to the equipment:
•Do not disable the power cord grounding plug.It is an important
safety feature.
•Plug the power cord into a grounded electrical outlet that is
always easily accessible.
•Unplug the power cord from the power supply to disconnect
power to the equipment.
Place the power cord where it is not damaged by or compressed by items
placed near it.
1.2 Caution –Laser Radiation
Adhere to all written and graphics symbol warnings in this user manual. For safe and productive
operations, this instrument should only be operated by authorized and trained users who have read the
procedures and guidelines of this manual.
Do not stare at the internal light or view it through optical devices. This is a Class II-A laser product.
Always avoid eye and skin exposure to direct or indirect radiation. Use proper, approved eye and skin
protection.
Lasers are classified for safety purposes based on their potential for causing injury to humans’ eyes and
skin.
Most products that incorporate lasers are required by law to have a label listing the Class.

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2Physical Specifications, Designed Functions,
Capabilities and Features
Physical Specifications for J-MiniPro
•Dimensions: 219 x 125 x 116 mm. (8.6 x 4.9 x 4.6 inches)
•Weight: 2.6kg (approximately 6 pounds)
Power Supply
•Input voltage range: 120 - 240 V
•Input Current: >=3A
•Typical Response Time: 5 s
•Temperature Range: 5 –35 degrees C
The J-MiniPro manufactured by DRC has been designed and developed for the identification of CVD and HPHT
laboratory grown diamonds. It has been created with the following functions.
•Detection of both CVD and HTHP laboratory grown diamonds
oDiamonds of any shape, including rough or unfinished stones
oDiamonds from 0.003 carat in weight and larger, approximately .80 - .85 mm.,
(Sieve size +0000 –000)
oLoose stones (unmounted in jewelry) or stones mounted in jewelry
oDiamonds in the color range of D through J-K color (GIA scale)
•Use the J-Mini and its integrated mobile phone software only for its intended use as described in this
manual.
•Keep the device dry and away from liquids to avoid electrical shorts and shocks.
•The J-Mini is not heat-resistant: please keep it away from radiators and open flames.
•Repairs must be performed only by an authorized service engineer. Unauthorized tampering with the
device will void the warranty
•Do not modify or alter the device.
•Never operate any electrical device if it has a damaged cord or plug, if it is not working properly, if it
has been dropped or damaged. Call DRC for technical support.
3J-Mini Pro and Included Accessories

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Loose Diamond Tray
Jewelry or Ring Tray
USB Cable and Plug
Silver Sample Pendant
with three diamonds,
each 0.003 carat
Integrated Mobile
Phone/Computer
Power Button
Power Outlet
Scanning Tray
Slide-In Drawer

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4Set Up (no tools are required for assembly)
4.1 Un-boxing
4.2 Inventory the Contents
4.3 Set Up the Machine
4.4 Limitations
Initial Start-Up
1Cut any exterior strapping, and any
cellophane wrapping and discard
(responsibly)
2Open the package carefully
3Separate the contents from the foam
packaging
4We suggest that you keep the box, if possible,
for at least 60 days
5Lay out all the components
6Check them against the above itemization of components and trays
7Make note of any items that are missing or damaged
8Contact the DRC Support Team as noted on the laminated worksheet to arrange for
replacements to be sent and possibly a claim request from the carrier. Report any
shortage or damage to [e-mail].
9Set the J-Mini Pro on a sturdy table, countertop, or desk
10 The surface should be flat and level
11 J-Mini Pro does not identify CZ (Cubic Zirconia) or Moissanite.
12 It is made only to detect laboratory grown diamonds. Nevertheless, both stones can be easily
identified using a hand loupe as both are noticeably doubly refractive.

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4.2 Mobile Device
4.2.1 Note that the default mobile device used in the J-Mini is the
Nokia XR20. User instructions for this mobile phone can be
found here:
https://www.nokia.com/phones/en_us/support/nokia-xr20-
user-guide
a. The integrated mobile phone is not intended to be used
as a personal communication device. DO NOT remove it
and try to use it for this purpose.
b. The Nokia mobile device is shipped with a prietary DRC
software application pre-installed.
c. Do not remove the phone from its housing unless
instructed to do so by the Support Team at DRC.
d. This phone is shipped with a minimal charge. We
suggest that once you plug in the J-Mini, the device is
allowed to charge for 2 to 3 hours.
e. If the battery is completely discharged, it may take
several minutes before the charging indicator is
displayed.
f. A SIM card is preinstalled in this mobile device and should not be removed or altered without
speaking to [e-mail].
4.2.2 Insert the proper end of the USB cord into the outlet at the base of the instrument.
4.2.3 Insert the other end of the USB cord into the power plug and plug the unit into a grounded power
source.

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Home Screen
4.3 System Setup
To switch on your phone, press and hold the power key until the phone
vibrates.
•When the phone is on for the first time, choose your language
and time. Select Settings/Menu >> Time & language > Date
and time The DRC default language is English.
•Follow the instructions shown on your phone.
•Turn on Wi-Fi. This phone does not use a mobile data
connection. It requires a Wi-Fi network.
oTap Settings/Menu > Network & Internet > Wi-Fi.
oSwitch Wi-Fi to ON.
oSelect the connection/network that you want to use.
oEnter your network’s Wi-Fi password.
oYour Wi-Fi connection is active when network Wi-Fi
icon is shown on the status bar at the top of the screen.
•Install Available updates. This mobile device is shipped with the most current software; however, it is
helpful to check for the latest Android software updates.
oTap Settings > System > Advanced > System update > Check for Update to check if updates are
available.
1. Fingerprint sensor
2. Camera
3. Microphone
4. Flash
5. SIM and memory card slot
6. The Google Assistant/Google
Search key1
7. Front camera
8. Earpiece
9. Headset connector
10. Volume keys
11. Power/Lock key
12. USB connector
13. Microphone
14. Loudspeaker

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oIf your phone notifies you that an update is available, follow the instructions shown on your
phone.
•For everyday operation, power up the unit by pushing the Power Button on the side of the mobile
device.
•Select either the Loose Diamond Tray or the Jewelry tray, seat it on the Slide-In Tray, and push the
tray into the machine.
•The device will turn on and the home screen will display an icon labelled DRC. Tap this button and wait for
the scanning program to load and display the DRC J-Mini Pro home screen

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5J-Mini Pro Program Desktop
The opening desktop for the DRC software program is arranged for easy operation. Tap the J-Mini Pro icon and
the introductory splash screen at the right will appear on the screen before the operating desktop for the J-Mini
program will appear.

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Archive File of Scans
5.1 Navigating the J-Mini Pro Desktop
The screen will appear like the graphic below. In this view, the loose diamond tray has been set onto the
Scanning Platform.


1. Scan Mode: loose or
mounted diamonds (the
pictured ring icon indicates
mounted goods)
2. Manual Focus
3. Settings
4. Main Power Button
5. Scanning Field
6. Archive File of Scans
7. Automatic Lot Number
8. Main Scan Button
9. Scan Report
10. Invert Screen View









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Preparing for Merchandise Scanning
5.2 Step 1
The J-Mini Pro machine must be set to the right merchandise category so that the camera can
accurately capture and diagnose the image of each item that it scans.
Every scan is automatically archived. If you want to customize details of the merchandise that you scan, follow
these directions.
Tap this location to customize the label for your scan and add detailed
information for either loose diamonds or diamond-set jewelry. Enter this
information before scanning.
If you do not enter your own data, an automatic lot number is assigned.
The top section is designed for loose stones.
a) Lot Number: You can assign your own lot, SKU, or tracking
number
b) Carat weight of the diamonds you have scanned
c) Sample Required (notes)
d) Details (notes)
The lower section is for jewelry.
a) Lot or Purchase Order number
b) SKU number
c) Size (finger size for rings)
d) Karat
e) Carat weight of gemstones
f) Gross Weight
g) Net Weight
h) Diamond (quantity)
i) Diamond (weight)
7

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5.3 Preparing to Scan
5.3.1 Before You Scan: when scanning either loose or mounted diamonds, the J-Mini Pro depends upon light
reflected from the stones.
5.3.2 Select the appropriate tray (supplied) that you want to use for your scan.
•The Loose Stone Tray has an inscribed alpha-numeric grid so that when you view multiple stones,
you can identify the location of specific diamonds. J-Mini Pro can scan and detect either rough or
finished stones.
•The Mounted Jewelry Tray contains slots for up to five (5) rings. Pendants, earrings, and other
Jewelry can be positioned on this tray for scanning.
5.3.3 Scanning is done by means of an overhead optical system. It is not required that the diamond tables be
strictly horizontal (parallel to the platform), but diamonds set into surfaces (sides or into gallery work)
that are not visible when looking straight down will not be scanned.
Repositioning the jewelry for additional scans may be required.
Loose Stone Tray
Mounted Jewelry Tray

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5.4 Scanning
From the top menu bar, select the correct scanning mode on the screen. One mode is for loose diamonds and
one mode is for diamonds set into mounted jewelry.
•The home scanning screen is set for loose diamonds as it is
indicated with the diamond icon in the Mode position.
•To toggle the mode to mounted jewelry, tap on the diamond
icon. It will allow you to see the jewelry mode setting. Tap
on this icon and the J-Mini will then be ready to scan
mounted jewelry. (as pictured)
•Scanning Area
5.4.1 Load the merchandise that you want to test on your selected
tray and push the Slide in Tray into the J-Mini Pro. Ensure the
scanning drive is closed properly before initiating the scanning
process.
5.4.2 Tap the Camera Lense Icon on the bottom menu bar. This will
begin the scanning process.
5.4.3 The scanning process, regardless of the quantity of pieces on
the Scanning Platform, will take less than one minute.
5.4.4 Note that the most accurate scanning results are achieved with
merchandise that is clean.
CAUTION. When scanning jewelry, it is best to conceal any tags that are
attached. J-Mini Pro uses light to perform its analysis. Jewelry tags are highly
fluorescent which disrupts and slows the scanning process.
Do your best to conceal these tags or turn them on edge so that are not scannable by the
instrument.
Any use of other displays or jewelry box inserts to scan diamond set jewelry will generally
be unsuccessful. Most of these inserts are made of highly fluorescent materials which will
disrupt the scanning process.
When there are large tags or display boxes showing on the tray the length of the scan time
will increase as the machine tries to scan them because of their fluorescence.

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6Scanning Results Analysis
6.1 Automated Scanning Results: What You See
The objective of the J-Mini instrument is to detect CVD or HTHP diamonds and identify them to the operator.
Whether they are loose diamonds or mounted into jewelry, the results of J-Mini scanning are displayed
in a similar manner. The intelligent, automated software that has been developed by DRC draws a
colored box around detected laboratory grown diamonds. While this system is highly accurate, it is now
possible to achieve a heightened level of accuracy by means of additional examination of light
performance features for the operator to examine.
6.2 Basic Detection Results
Detection that immediately identifies more than 98% of laboratory grown diamonds is shown on the
chart below.
CVD or HTHP
Laboratory Grown
Diamonds
Review This Stone
Under
Fluorescent Light Tab
Recheck These Stones
Using Fluorescent,
Photoluminescent, and
Phosphorescent Tabs
Green Box Blue Circle
These stones are almost
certainly laboratory grown;
HTHP or CVD diamonds.
Green Box Red Circle
Examine these stones under
the fluorescent tab. If they
fluoresce, they are natural.
Blue Box Red Circle
Recheck these stones using
all featured tabs and the
instructions below.
These boxes will surround each diamond that is detected as laboratory grown so that identification is
accomplished more easily and rapidly. When scanning small stones that are closely grouped, it is possible
that a single box may surround more than one stone.

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7Observing and Interpreting Scanned Results
7.1 Understanding Scan Results
7.1.1 After Jewelry or Loose Stones are scanned, J-Mini Pro software automatically identifies laboratory
grown diamonds or stones that may be LGD but require further investigation with alternate viewing
screens.
7.1.2 These stones are identified by means of boxes and circles that surround the diamond.
7.1.3 They may indicate identified laboratory grown diamonds or stones which require further review using
supplemental screens.
7.1.4 A key to these geometric identifiers is illustrated below.
This is a picture of a loose stone scan.
•Note stones with Green-Box-Blue-Circle. These are known
laboratory grown diamonds.
•Note the stones with Green-Box-Red-Circles. These stones
require examination under fluorescent light.
oIf they show fluorescence, they are natural.
oIf they do not show fluorescence, they are likely
laboratory grown diamonds.
oExamine them further under photoluminescent and
phosphorescent light.
•Note that the machine counts the number of laboratory grown
diamonds, those that require fluorescent screening, and those
that require another scan or further testing.
•Images in this view can be enlarged by expanding the view with
two fingers on the touchscreen.
REVIEW WITH THE
FLUORESCENT LIGHT
CVD OR HPHT
LABORATORY GROWN
RECHECK/REFER
Green Box Red Circle
Review under external or
internal UV light: if they
fluoresce, consider them
natural
Green Box Blue Circle
These stones are almost
certainly laboratory grown
Blue Box Red Circle
Recheck these stones using
phosphorescent and
photoluminescent views

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Natural Rough Diamond Fluorescence
Common Natural Diamond Fluorescence
Natural Diamond Fluorescence Examples
7.2 Basic Scanning Diamond Identification
This mark indicates a confirmed CVD or HTHP laboratory grown diamond. No further
examination is required.
This mark identifies a diamond that requires review under an
internal or external fluorescent lamp. If this stone glows from
faint to intense fluorescent color as the examples that are
shown below, it can be considered natural. Shown below are instances of fluorescent
colors.
More than 30% of all natural diamonds exhibit some degree of fluorescence while nearly all
laboratory grown diamonds are inert or display only extremely faint fluorescence.
This mark indicates that the machine cannot automatically identify this stone. To identify this
stone, use the quad-screen view to simultaneously see comparative views as scanned and under
fluorescent, phosphorescent, and photoluminescent screens. It is suggested that the user re-
scan these stones.
If diamonds look like these examples in both the phosphorescent and photoluminescent
views, they are laboratory grown diamonds.

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7.3 Advanced Scanning Interpretation
7.3.1 Those diamonds whose scan displays a ‘Recheck’ box can often be identified through
advanced scanning interpretation. Only utilize these techniques if a diamond is indicated
with the ‘Rescan or Re-check’ box surrounding it.
7.3.2 To accomplish this, utilize a screen view that displays all four viewing modes. You can view these
screens by clicking on the labeled tabs at the top of the screen.
•Original (as scanned)
•Fluorescent
•Phosphorescent
•Photoluminescent
7.3.3 Note that each of these views is stored as a separate *.JPG file within the file folder stored as the Lot
Number.
7.4 Stage One Advanced Analysis
7.4.1.1 Compare the photoluminescent and phosphorescent views.
•If a stone is radiating any of the illuminated colors like the examples below and the stone glows
in both screens, consider the diamond to be laboratory grown. These colors may be intense or
muted.
•Colors in each of the screens may be similar but may also be different from one screen to the
other.
Samples of laboratory grown diamonds

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Automatic Scanned
View
Photoluminescent
View
Phosphorescent
View
Fluorescent
View