YEHUDA Sherlock Holmes 2.0 User manual

The YEHUDA Sherlock Holmes 2.0
User Manual

1
About the Legend- Inventor of The Sherlock Holmes detector 2.0
Zvi Yehuda
Mr. Zvi Yehuda is a world renowned Scientist and Pioneer in the Diamond and Jewelry
industry. His inventions have paved the way for generations to come. Here are just a few
of his inventions to date:
1965—Laser Drilling of Diamonds. Some diamonds contain an internal black spot
imperfection, and by using a laser he was able to drill into the black spot and clean it.
1977—The Yehuda Diamond Colorimeter, a device that examines rough diamonds and
predicts their color after polishing. The Colorimeter diagnoses the entire normal scale
of the D -K colors.
1982—Yehuda Clarity Enhancement- In the process he invented, a visible inclusion
(called a feather) within the diamond is rendered invisible to the naked eye. He found
a way to insert a microscopic amount of material that has the same optical properties
as a diamond into the inclusion, using a high pressure and high temperature process.
2013-Present—The Sherlock Holmes Synthetic Diamond Detector - a device which
detects CVD and HPHT synthetic diamonds in matter of seconds.

2
The YEHUDA Sherlock Holmes User Manual
The Yehuda detector detects lab grown Diamonds –loose diamonds,
mounted in Jewelry, single stones, large parcels and any size Melee. It
detects both CVD and HPHT lab grown diamonds.
This detector is designed to detect only white diamonds within D- K
colors. Lower color diamonds and fancy color diamonds should not be
tested.
Diamond simulants- CZ, Moissanite, diamond coated CZ and Moissanite
can be detected fairly easily when they are tested loose.
As for other gem stones –we currently do not have enough information.
Diamonds can be tested loose, in a thin plastic bag, or mounted in
jewelry. They cannot be tested if covered by a thick plastic or glass!!
Please visit our website www.yehuda.com. You can find a helpful video
on how to use the detector and our most updated manual. We highly
recommend checking our site for the latest manual.
Overview:
The detector uses a built-in cellular phone.
The only use of this phone is to work with the detector. Please do not
try to use this phone for any other use.
At any time, if the phone freezes –please re-start the phone.
Restarting the phone is done by pressing the ON/OFF button (left side
of the detector) for a few seconds until the RESTART icon appears. If
this action does not work, then press the ON/OFF button (left side of
the detector) and the Volume button (right side of the detector)
simultaneously for 10 seconds.

3
Warranty:
The detector has a 1 year full warranty under normal use. Using or trying
to use the phone for any other purpose will result in a loss of the
warranty and the detector will not be covered for any repairs.
Opening or tampering with any of the screws or trying to open the
detector body will also result in a loss in warranty and refusal to fix the
detector.
It does not cover water damages, being hit, dropped or any other
improper care.
The machine has protective stickers. Any attempt to open or tamper
with the machine will result in an automatic loss of warranty.
Parts:
Inside the box you will find the following:
The Sherlock Holmes Detector.
An international charger.
2 trays.
Plastic ring holder.
Black finger ring holders.
One black square
1 lab grown diamond in a bag.
Operation:
The charger can work in any voltage environment (100V-240V) but
you need to connect the correct nozzle. The charger must be
connected when working with the detector.
Insert the electric charger to the wall and screw it in the back of the
detector. Press the ON/OFF button at the back of the detector.
The green LEDs at the back and front of the detector should light up
to indicate that the detector is ON.

4
Please make sure you can see the green lights are on at the back and in
the front of the detector. At the end of the day, please shut off the
phone by holding the left button briefly and selecting the shutdown
option on the screen.
Please pay attention that the battery of the phone is being charged
ONLY when the detector is ON and the green LEDs are on.
If the detector is OFF and the phone is ON, the battery will not be
charged. At the end of the day please make sure to shut off both the
phone and the detector.
Press the cell phone ON/OFF button on the left side of the phone.
When the phone starts up –it will show an upside-down home screen.
Please swipe the screen, in the center of the phone (from left to right),
and the screen will flip.
If you see a red circle on the top left of the screen- please take the
charger out of the wall electric outlet, wait 10 seconds and put back
into the outlet.
If at any time you get a system message with "Diamond tester" on top-
please check the circle on the left of the message and click "OK".
On the home screen you will only see 3 icons:
1. History
2. Test
3. Settings. (Please do not try using the settings. It is
password protected and for our technician use only.)
For your confidence you can check the lab grown diamond sample
that you have received in the clear bag. Insert the bag into the
drawer. Press the EYE icon to test.
Insert the bag with the sample lab grown diamond into the drawer and
shut it.
Press the LOOSE DIAMOND icon to perform a test.
The sample diamond should be marked in red at the end of the test.

5
This test shows that the detector has identified your lab grown
diamond and is working correctly.
It is recommended to check the sample diamond every day.
You can use our sample diamond or any other sample that you have,
so long as you know for a fact that it is an actual Lab grown diamond.
After the test, you can save the result or press the back arrow to
perform another test. If you are not going to perform another test –
press the HOME icon.
ALWAYS MAKE SURE THAT THE DRAWER IS SHUT PROPERLY!
If the drawer is not fully shut you will get a yellow warning triangle
symbol on the top right and a message:
“Warning! Please close the drawer! Ok”
Press the OK and shut the drawer. The yellow triangle symbol may
remain until you press “Test”. If the drawer is shut, the next time you
press the “Test” button it will disappear. If the drawer is not fully shut,
you will get the message again.
If you open the drawer during the test you may see a white light. This
is the flash light of the cell phone.
Please do not be alarmed. The detector will not emit the testing lights
if the drawer is not fully closed.

6
Connecting to WIFI.
1. On the main screen -swipe with your finger from the top of the screen
down.
2. Press on the top left sign of the WIFI.
3. You will get a list of one or more available WIFI networks- pick your
network and enter the password.
Preparations for sending emails.
1. First you have to decide which email account you would like to use.
Bear in mind that we recommend CREATING A NEW EMAIL/GMAIL ACCOUNT for
the detector.
If you use your personal email/Gmail account all of your mail will be downloaded
to the detector and we highly recommend NOT TO DO SO.
Please CREATE A NEW Gmail or email account that will be used for this purpose.
You may call it Sherlock Holmes and the detector se
rial number as appears at the back of the detector.
2. Make sure you have saved at least one test. (If you did not- make a test and
press the “save” icon at the end of the test)
3. Go to History.
4. Press the “I” Icon.
5. Press the send icon in the bottom right.
6. Choose the Gmail or Email icon per your email account that you have
prepared.
7. Follow the instruction of adding your email address and password.
8. If at any time the phone is asking permission to update the Gmail/email
account –allow it to do so. (Please remember that sometimes GMAIL or
other email accounts may ask you on your computer or other phone for
permission.
9. If you set up Gmail- at the end of the setting you will be asked to go to
Gmail -enter the recipient email and send it. (It is recommended to allow
Gmail to access your contact list so whenever you start typing an account
name –Gmail will automatically load it.)
10.At any time if you get stuck just restart the phone by long press on the left-
hand button.
11.All pictures will be emailed with your serial number.

7
Setting Bluetooth connection.
1. Please pay attention that in most cases iPhones do not connect with
Android phones via Bluetooth. For this reason, you may only pair with
Android phones.
2. You may also export your picture to another phone via Bluetooth.
3. In the phone that you would like to transfer the results to –open the
setting of the Bluetooth connection and scan for nearby devices.
4. Swipe the screen from the top down
5. Press the setting wheel.
6. Go to connections/ Bluetooth.
7. Scan and find your phone.
8. Pair the devices in the same way as you pair any 2 phones.
9. Restart the phone.
10.Now your Sherlock is ready to export via Bluetooth.
G-drive setting.
If you have set a Gmail account you have automatically created a G-
drive account by the same name and the same password.
Export the results.
1. Go to History and choose the test results that you wish to export.
(Pressing the arrows in the bottom of the picture or sliding the slider
at the top of the screen
2. Press the “I” icon
3. Press the export icon.
4. Choose the (already set) Gmail/email/Bluetooth icon.
5. By default, the detector will export the result picture. If you wish to
also export the original picture and/or the colored and/or the
glowing picture—you have to mark the circle next to any/all them
and they will be exported as well.
6. Enter the recipient email address or the Bluetooth paired device and
send it.
7. At any time if you get stuck reset the phone by pressing the left
button for a few seconds.

8
Now you can start performing tests with the detector.
You can test mounted diamond jewelry, loose diamonds or loose
diamonds in a plastic bag.
DO NOT TEST DIAMONDS IN A PLASTIC BOX (THE BLUE BOX) OR
COVERED WITH A THICK PLASTIC OR GLASS. If you test diamonds in a
plastic bag- make sure it is thin and clean.
The best way to test loose diamonds is uncovered in a tray or on the
glass base.
In any event –the detector detects only diamonds that it can SEE from
the top. If a diamond is covered by another diamond - it will not be seen.
The same goes for jewelry - only diamonds facing the top camera will
be seen.
If you test a ring or any other jewelry make sure to test it a few times
from all angles and lying flat on the bottom.
Insert the diamond/s or the jewelry piece into the center of the drawer
above the glass square. You can tap on the screen before starting the
test in order to use the autofocus mode.
You can use manual focus by sliding the slider on the bottom of the
screen. When the slider is located around the middle - the focus is on the
bottom of the tray. (Testing loose diamonds)
When the slider is all the way to the right - the focus is on the top of the
drawer. (Testing rings)
You can use the autofocus by taping on the screen or the manual focus
by using the slider.
The detector will remember the focus for your next test.
If you do not tap the screen or move the slider- the focus height will
remain the same for the next test.
When using the autofocus mode the test may take a few seconds longer
than when using the manual focus.
The reason is that with the autofocus mode the camera needs to find the
focus. When using the manual mode, the camera already knows where
the focus is.

9
When inserting jewelry into the drawer you need to press the RING
icon in order to perform the test.
When inserting loose diamonds into the drawer –you also need to
press the RING icon as well in order to perform the test. If the resulting
image shows too much red and you cannot distinguish between the
diamonds –redo the test by pressing the LOOSE DIAMOND icon
When you test with the RING icon, the detector is set to be more
sensitive.
This is the reason that you may see small red dots around the jewelry.
Please ignore them.
When you get the result of either mode (loose or jewelry) you can see a
picture of the tested diamonds/jewelry.
Checking jewelry
It is recommended to check rings using any of the ring holders and lying
on the glass table.
Make sure to test the jewelry from all sides.
When using a ring holder, you may cover the bottom lamp with the
black square. In this case the result pictures will be more vivid.
You can use it or not use it as per your preference.

10
Please pay attention:
The diamonds in the pictures you are about to see in the next 3 pages,
are positioned with the table facing down. This is done for the
photographic purposes.
We recommend, when testing loose diamonds, to position them on the
pavilion side shown in the example picture below.
-----------------------------------------------------------------------------------------------
An example of a diamond lying on the pavilion

11
In order to know if a diamond is natural or lab grown please follow
these rules:
Natural diamonds results:
Any diamond that shines ONLY blue or light blue colors
without any red marking means it’s anatural
diamond! (Any shade of blue)
All the following are examples of NATURAL DIAMONDS

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If the diamond shows any other color or red marking –it is a lab grown
diamond. It is either CVD or HPHT grown.
There are a few different results that you may see from the detector –
all of the below results indicate that the diamond is a Lab Grown
Diamond
1. If the diamond is fully marked in RED. Results are (CVD OR
HPHT)
2. If the diamond shines in any color (INCLUDING blue) AND is
partially marked in
3. If the diamond shines in
any color except blue. It can be YELLOW, GREEN, RED,
ORANGE, PURPLE results are (CVD)
Pay attention: If the diamond shines in blue AND there is a
red marking - the results is CVD.
Examples of results of lab grown diamonds
They are either marked in red or shine in a NON BLUE color.
RED. Results are (CVD)

13
More Examples of results of lab grown diamonds
Results of lab grown diamonds in jewelry:
The center stone and the red marked stones are lab grown diamonds.
The blue stones are Natural diamonds.

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Reading the results
With most diamonds the results are very clear.
If the stone is marked in red- the diamond is a lab grown diamond.
If the diamond is not marked in red –you need to make a decision.
Is it BLUE or NOT BLUE?
If the color is BLUE then the diamond is a natural diamond.
In rare cases if it is hard for you to determine the color and you can’t
make a decision –please refer the stone to a gemological institute for
further testing.
Is it BLUE or NOT BLUE? Is it BLUE or NOT BLUE?
Is it BLUE or NOT BLUE?
-The two center stones
are green (CVD)—NOT
BLUE.
-There are a total 6 red
stones (HPHT or CVD)—
NOT BLUE.
-Every other stone in all 3
rings above are blue
(NATURAL)—BLUE.
-The center stone is
green (CVD) —NOT
BLUE. -Every side stone
in the ring is blue
(NATURAL) —BLUE.
***If a stone looks very
bright blue or very dark blue,
DO NOT confuse them with other
colors such as white or purple
because they are all different
shades of BLUE.
-The top wedding band
has a total of 15 red
stones (HPHT or
CVD)—NOT BLUE.
-The bottom wedding
band has a total of 7
mixed green stones
(CVD)—NOT BLUE.

15
Detection errors:
To-date, 99.9% of all known lab grown diamonds that we have checked were
detected by the Sherlock Homes as lab grown diamonds.
False positive situations:
A minute amount of natural diamonds will be marked by the detector as lab
grown diamonds even though they are natural diamonds.
This rare mistake of the detector will usually happen with type 2B diamonds.
Type 2B diamonds usually carry a blue or gray tint. These diamonds will show
blue fluorescence with partial red marking.
There are also some very rare type 2A natural diamonds that are D or E color and
show partial or full red marking.
Therefore - most type 2A natural diamonds will be detected as natural diamonds,
(without red marking) but a few percent of them will result as false positive lab
grown diamonds.
If the diamond shows blue color and partial red and it is a D or E color- we
recommend to refer to a laboratory for further inspection.

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There are also other natural diamonds that may show irregular results. (Blue
fluorescence and partial red marking or fully marked red color). They are very
rare.
We did not encounter natural diamonds with a NON BLUE fluorescence and red
marking. This means that if the diamond shows a NON blue fluorescence and
shows red marking, it is a CVD lab grown diamond as per our testing.
We have encountered a natural diamond that showed a green color similar to
CVD results.
Therefore, we recommend that in case you get a green color result you should
check this diamond under a regular UV lamp.
If it shows fluorescence- it is a natural diamond. If there is no fluorescence, we
recommend to send this diamond for further testing.

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Detecting CZ (Cubic Zirconium) and Moissanite –in loose stones.
The Sherlock Holmes can be very helpful in detecting CZ, Moissanite and diamond
coated CZ and Moissanite in loose stones only!
The diamond coated CZ and Moissanite show the exact same results as the
regular non-coated CZ and Moissanite. From now on when we refer to CZ and
Mossanite- we refer to both coated and non-coated CZ and Moissanite.
Please carefully view the pictures in order to understand how to distinguish
between Diamonds (Grown and Natural) and these simulants:
In general, both CZ and Moissanite DO NOT SHOW FLUORESCENCE under our
lighting.
It is highly recommended to check loose stones with and without the bottom
lamp covered with the black square supplied with the detector.
IN ORDER TO MAKE THE FINAL DECISION YOU MUST COVER THE BOTTOM LAMP.
When you see a stone that does not show fluorescence you can draw the
conclusion that it is a SIMULANT AND NOT A DIAMOND.
In the history of your detector we stored one picture with 6
stones with the bottom lamp covered.
The top 2 stones are diamonds and the 4 stones under them
are CZ and Moissanite. Please go to the history and make sure
you understand the results.
The following pictures are not stored in your history and are just an
example for your reference. You can see the difference between
diamonds (natural and lab grown) and the CZ and Moissanite simulants
with and without the bottom lamp covered.

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The 4 stones on the right-hand side are suspicious to be simulants as they hardly
show any color with the bottom lamp NOT covered.
In this case –please cover the bottom lamp with the black cover and recheck.
Natural Lab Grown Moissanite Cubic zirconium
Diamonds Diamonds
Now in the bottom picture with the lamp covered you can see that these 4 stones
are not fluorescent and thus they are simulants.
The 2 on the right are CZ and the 2 next to them are Moissanites.
Natural Lab Grown Moissanite Cubic zirconium
Diamonds Diamonds

19
General note:
A useful tool when in doubt is the regular long UV fluorescent test.
Lab grown diamonds do not show, in general, a reaction to exposure of
a regular jeweler's UV light.
So in case of a doubt- if a stone shows fluorescence under your regular
UV light- it is most likely a natural diamond.
Modes
At the end of the test you will get the result. On the top of the screen
you see 4 headers.
RESULT, ORIGINAL PICTURE, GLOWING PICTURE, COLORED PICTURE.
You can see the press EACH header of the results screen.
"Result"- At the end of the test you will see the results of the test. If you
have pressed any other header - press the "result" again to go back to
see the result of the test.
It combines the final test results. There is no need to go to the other tabs
but for your convenience –you can see them.
"Original picture" - Press “ORIGINAL PICTURE” to see the original picture
without any markings.
"Glowing picture" - Press “GLOWING PICTURE” to see the diamonds glow
in the dark. The diamonds that glow in the dark are Lab Grown diamonds
that are marked in red with our software.
Sometimes it is easy to see them when they glow in the dark.
"Colored picture"- Press “COLORED PICTURE” to see the diamonds shine.
You can go back and forth between the 4 positions.
At the end of the test you can go back by pressing the ARROW or save
the results by pressing the MEMORY CARD icon.