Microsoft Word - NEW ROUGH MANUAL.DOC

1. Basic Measurements:

1.1 Preparation for measurement.

The process of measurement is necessary for obtaining the parameters of a stone before having it
analyzed. The program must "study" the measurements of a stone before calculating the best
possibilities.
Note

: It is important that the device is calibrated, when the stone is being scanned. Thus, when

beginning to work with the device you must be sure the device was calibrated and it is
recommended to run a test that would prove it.

Run the OGIROUGH program. The icon is on the desktop of WINDOWS.

You are in the main screen of the program. Note, the majority of the buttons cannot be activated
due to the fact that the program has no information to analyze. In this stage of the process you
should either scan a new stone or receive information regarding a previous measurement from
the archive.

Press button

. You will see the measurement of the stone on your screen.

You will be shown what
is the channel you are working with
at the moment (Channel A).
One channel device
will lack such indication.

If you place the stone
on the platform, you should see it
on the screen. If you do not see the stone,
check, if you have the right channel installed
(in case of a multi- channeled device).

Spinning the platform:

Rotation of platform for 3,6 degrees in accordance with the clock.

Rotation of platform for 3,6 degrees against the clock

Rotation of platform for 180 degrees.

Enlargement of contrasting of an image

Press START for measuring of regular stones

Press SCANNER for laser scanning of the stone and exposure of indentations and
etcetera- defects that can not be exposed by video camera.

Press CRYSTAL for measurement of transparent stones.

Stop measuring and return to the main window.

Note

: If you are not sure, which method of measuring to select, first of all press button START. If

the weight of the stone appears to be smaller than the actual one, repeat measuring using button
CRYSTAL.

Placing the stone on platform.

If you use a multi-channeled device (various rotating platforms), make sure, that the platform
you select fits the stone size-wise. Due to the fact that each device is constructed to meet the
special needs of each order, it is recommended to ask your supplier which platforms must be
used with different stones. Generally speaking, any rough stones can be placed on the big sized
platform.
Make sure that you see the stone in the measuring window (look at picture above). If you do not
see the stone, try activating other channels by pressing a button in the left down corner of the
measurement (A,B,C). The smallest channel (for the smallest stones), is marked A, the medium
one is marked B, and the biggest one having the biggest platform is marked C. While changing
the activation between the channels the blue headline in the middle of the measuring window
will change.

1.2 How to achieve the best results in measurement

Correct placing of the stone on the platform:

A. Place the stone in the center of the platform. The process of scanning occurs while the
platform, with stone on it, is in rotation. If the stone is not placed in the center, it is possible that
some areas of the stone will be out of the sight of the camera. In such case, you will receive an
"error" message.

B. Try to place the stone having the flat side on the platform. While scanning, the stone is
vacuumed to the platform through a small opening in the center of the platform. Such placing,
will guarantee an effective affixation of the stone.

C. Make sure that the stone is not moving. Set the stone in the most stable position making sure
that it will not move during rotation.

1.3 Measuring and results

Press button "START". The stone will start rotating on the platform and the machine will
measure it. The process takes a couple of seconds and in some cases will repeat itself for
reaching better results.

When the process of measuring is over the program will return to the main window and will
show the results. Please notice, that there are many new buttons on the screen. It means that you
can start the analysis of the stone.
Calibration test. Measuring of a polished instead of a rough will help you to check whether the
machine is calibrated correctly. Just compare the results with the known parameters of the
polished stone. If the results do not match, please contact the closest OGI branch.

Viewing of the Results

Weight of the
stone

Measurements

Clicking the right mouse on the OGI SYSTEMS logo, the image will become smaller, and clicking the left mouse it
will become enlarged.

On the screen you will see a graphical simulation of a real stone. In order to view it from
different angles, you can use an additional window having arrows of rotation or you can simply
press on the stone with the left button of a mouse and without releasing it, spin the stone.
Above the image of the stone you can see its measurements (look at picture)

6,14 7,18 4,04 / 65,7%

where 6,14 width, 7,18 length, 4,04 height, 65,7% relation of width to height in %.

The general weight of the stone is presented on the left upper corner of the screen. Notice, the
weight is a calculated measure and is not measured directly. That is why it is possible that the
weight will result not 100% accurate, especially if the stone has deep

indentations and other

similar defects. For correction of the weight (to avoid mistakes in analysis) just click on the
number that indicates the weight. Clicking the left button of the mouse will make the weight
lesser, clicking the right one will enlarge it. All of the analysis, from this moment on will be
based on the new value of the weight.

Notice. If the calculated weight is smaller than the actual one, repeat the measuring once more,
pressing button "CRYSTAL" instead of "Start".

Your device is accessorized with laser scanner. The scanner allows discovering deep
indentations in the stone. You get a real image of the stone and a more accurate weight. Press
button "SCANNER" to initiate scanning.
After measuring and correcting the weight, it is recommended to keep the results in an archive. If
a second time around is needed, it is much simpler to use the results of a previous measurement
than repeat the measuring all over again. See the instructions for usage of archive below.

2. Analysis.

After measuring, the program offers you several methods for analysis, in order to

help you decide which way is the best for sawing and polishing of the stone. Generally speaking,
for the sake of simplicity, we have divided the analysis into two methods:

- automatic: The program searches for the best stone (as set by the user) and determines the

line of sawing by itself.

- semi- automatic: The user is the one to determine the steadiest side of the stone (the

sawing line), and the program searches the best possible stone.

2.1 Automatic Analysis

2.1.1 Determining the criteria of a diamond.

Select the form of polishing of the required diamond. Press a button with the image of

the polishing of a stone (if no option is chosen, then- round). A window that allows choosing a
form from data pool will open at this point. Choosing a form is quite simple- click on the image.
The program will return to the main window, and the chosen form will appear on a button on the
upper side of the screen.
A list of forms may be chosen. The program not only allows analyzing more than one form of
polishing, but also determining a list of forms for analysis and calculating the max. profit for
several forms of polishing. For example, all at the same time, you can compare a calculated
profit from three different shapes (round, oval or princess). In order to list the forms that were

selected, simply mark it with your mouse (they will become of different color) and return to the
main window, by clicking on the button with the image of an arrow.

Notes for the image: Press LIST ON in order to return to the last list of the chosen forms.
Pressing LIST OFF will return you to working with a single form of polishing.

When choosing the form of a princess or an emerald, you must choose a

rectangular stone- [R] or square one- [S].

Determining the proportions and the quality of a stone.

There are different standards (institutes and laboratories), which determine parameters of
quality for polishing of round stones. One should choose the standard with which he prefers to
work. Press button "INSITUTE" in order to select the standard. You will see, that the parameters
for each standard are registered in files (having the same name as the standard). Nonetheless, you
can create a new file, create a new criteria and quality with parameters, determined by your tech-
list.

Most laboratories and institutes do not determine proportions for fantasy stones. You will

not be able to select a standard, trying to get a stone different from a round one. Such an attempt
will bring to an "error" message. Every fantasy form of polishing has its own file, that includes a
table of quality parameters and one can change it according to one's requirements.

You must also determine criteria for the quality of polishing: excellent- "EXCELLENT",

very good- "VERY GOOD", good- "GOOD", satisfactory- "FAIR".

2.1.2 Analyzing.

Searching for the best stone. After determining the form of polishing, quality and

proportions, you can begin analyzing the stone in search for max. profit. Select one of the three
conditions of analysis: FLAT, LIGHT RAMP or OPTIMAL. Pressing one of these buttons will
start the analysis, a process that can be interrupted in any time by pressing CANCEL in the
bottom of the screen.

FLAT. Use this button to find the best stone in which the flat side of the stone

will be placed in the bottom- directly on the platform, on which the stone is rotated.

UP FLAT. Use this button to search for the best stone having the flat side of the

stone on the bottom- making it parallel to the surface of the platform on which the stone is
rotated and which is lifted upward, to the level when you receive maximum gain of the polished.

LIGHT RAMP. Use this button to search for the best stone, having its flat side in

an angle against the surface of the platform. For installation of the maximum possible angle of
bending click the right mouse, install the angle and press OK.

OPTIMAL. Use this button to search for the biggest stone (according to form and

quality as were chosen) that can be abstracted from the analyzed rough.

Use this button to search for the biggest stone (according to form and quality as

were chosen) that can be abstracted from the analyzed rough and for a second stone that can be
abstracted from the remnants of the stone.

MULTITABLE. Use this button to search for the biggest (size- wise) stones that

have the same weight and characteristics, but set differently inside the stone.

Searching for the "Perfect Couple"- two identical stones

Cutting off the defected areas of the stone in order to exclude their analysis.

2.1.3 The Results of an Automatic Analysis.

Having the analyzing process finished, the program will return to the main window with the
results.

You may study better about the results of sawing by manual measuring of the received data- of
one or more parameters. Foe example, you can view the results of a measuring attempt of the
upper angle (of the crown):

The initial upper angle- 35,8 degrees. Clicking the left mouse we change the angle up to

35,9 degrees. (The left button reduces the value). Just as the upper angle is changed up to 35,9
degrees, other parameters will be modified as well (weight and upper height). We should note
that the color of the digits will change to green, which means that the parameters of the stones
are changed for the worse:
Note. We can use the color of the digits that reflect the results in order to receive a more
accurate and effective picture of the quality of polishing.
Blue color means "EXCELLENT" quality (the best level).
Green color means "VERY GOOD" quality (second best).
Gray color means "GOOD" quality (third best).
Red color means "FAIR" quality (unsatisfying quality).
In the example demonstrated above, the modification of the upper angle changed this parameter
(the upper height) from "Excellent" level to "Very Good" level.

2.2 Searching for the second stone.

After receiving the results of the analysis, new buttons will appear on the screen. These buttons
will enable you to discover whether it is possible to make use of those parts of the stone that
were left un- used and to find the biggest possible polished, that can be produced from it.

2.2.1 Separation of the stone.

Click on the button, on which the sawing line meets the surface of the crown.

The result is as following: the rough will be separated into two stones, named "Side 1" and "Side
2". The information about the stone that is received from side 2 appeared from before, but at this
point, the gray table in the upper screen has changed:

Example: The gain in this case is 45,5%, though before it was 43.5% from the same stone. In
contrast with the original one, in this case the program considers for 100% not the whole stone
(parts 1+2) but the blue side only.
In addition to the gray table, the program also added information about "Side 1":
Weight of "Side 1"= 0,05 Ct, which is 2,7% of the weight of the entire stone
Measures "Side 2": 4,41- width, 4,79 length et cetera

2.2.3 Searching for the second stone.

At this phase the functions of the buttons in the right side of the screen are changed and you can
use new buttons for rough polishing as two different stones. Meaning that now you can analyze
the second part of the stone and even more: you can modify the usage of the first one.

Searching for the biggest possible, stone that can be abstracted from side 2 (according to the
selected form and quality):

Searching for the biggest possible stone, that can be abstracted from side 1 (according to

the selected form and quality):

Searching for the biggest possible stones that can be abstracted from both sides of the

stone (this function is a combination of the two previous ones):

Searching for the biggest stone that can be abstracted from side 2, having the surface of

the crown on the sawing line.

Searching for the biggest stone that can be abstracted from side 1, having the surface of
the crown on the sawing line.

Combination of the two previous methods:

Note: Before analyzing you can separately select form of polishing, quality and proportions table
for each stone. After receiving the results you can analyze the stone once again (or one of its
sides) according to different polishing forms and parameters, all the times as needed. It is
recommended to save the results for new analysis or use the archive. The procedure of saving
data will be described later on.

You can determine the weight until which you need to enlarge the stone in one of the parts
pressing button:

You will see the next window, in which if you select a red or a blue part, you can determine the
weight of the polished in that part, and after that the program will recalculate the stone according
to your requirements.

2.2.4 Analysis results of two stones.

In the example, that is demonstrated below, we have used both sides of the stone for

polishing round diamonds.
After having the image of a rough with a polished on your screen, you can rotate the stone in
order to view it from different angles by clicking the left mouse without letting go having the
cursor of the mouse on the stone during rotation. Note, this screen is an analogy to the previous
one with results, but this time the information also appears in the lower side of the screen both
parts of the stone are being used.

Here you can view the gain you obtain from both parts of the stone.

Another blue table was added on the screen (we already discussed the upper one). These are the
parameters of the second polished stone. You can click on the new values in order to investigate
how their alteration affects other parameters.
Clicking on the weight value, there will be opened a new window with information about the
changes of the weight of the stone in the process of its polishing.

2.3 Semi- automatic analysis (installation of the table).

2.3.1 Positioning of a table manually.

Press button

Here you have the option to mark the stone "live". The stone is being separated into two parts by
the sawing surface. Clicking the right mouse (without releasing) you can make parallel shifting.
By clicking the left mouse (without releasing) you can rotate the sawing surface according and
against the clock.

Right before your eyes the computer re-calculates the parameters of both parts of a stone.
You can select the positioning method of the polished inside the rough (relevant buttons in the
right side of the screen).

Searching for the maximal possible stone.

Searching for maximal possible stones positioned in a parallel way against

the sawing surface.

Searching for maximal possible stones that are adjacent in their table

according to the sawing surface.

Searching for maximal stones having their tables positioned in a certain

slant to the sawing surface.

3. Laser Marking.

After having finished the analysis of the stone and an accurate determination of forms and
parameters of the polished you can finally start laser marking. Laser marking enables you to
mark the stone with sawing lines, points of support and assistance.
Press button

On the screen you will see a real video image of the stone, received from the camera, and a
silhouette of the stone with the sawing surface.

Defect Marking:

Lets study an example of a stone having three defects of different sizes and different depth
indentation.

Press button "PIQUE". A new window will be opened:

DIAMETER- altering the diameter of the marked defect
PREV- going to the previous, already marked defect
NEXT- going to the next, already marked defect
DELET- remove the current marking of a defect
FELETE ALL- remove all marking of a defect
CLOSE- exit the function of marking defects

MARKING THE DEFECT.

Locate the cursor of a mouse (shaped like a cross) on one of the defects and click on it. A red
mark will appear on the defect and the stone will spin for 90 degrees automatically right away. In
our example the window in this stage will be as following:

The red line indicates a possible location of a defect after having the stone span for 90 degrees.
Note, that after the rotation of the stone the contour of the stone will change its form and so will
the defects placed on different levels of depth inside the stone, those will alter their location
correspondingly. The red mark will "spin" with the stone, for it was placed on the surface of the
stone and it no longer indicates the defect.

In other words, you have marked the location of the defect in two dimensions and now it is
necessary to determine the location in three dimensions, meaning the profundity.

Click on the red mark once again and without releasing the mouse drag it along the red line until
meeting the defect. Now you can release the mouse. This will inform the program that there is a
defect in the third dimension, called defect depth. In this phase, you will be asked to insert the
size of the defect (diameter, mm). Insert number and press "OK".

Use the mouse to drag the mark along the red line. Release the mark, when you reach the defect.

Having that done, the red mark will "stick" with the defect and an arrow will point the mark,
signaling that it is a defect and that you are now working with it. The size of the mark will
change according to the size of the defect.

Press button "CLOSE" (exit), on order to return to the main window. A three- dimensional
graphical image of the stone will have now white spots, indicating size and location of defects
inside the stone. If you analyze a possible outcome of a polished, you will see what defects will
be located inside the stone.

4.2. Removing the Defected Areas.

4.2.1 Defected Areas

If you have defected areas in a rough, the program allows you to "remove" it and then analyze
the stone, as if the defected areas were already sawn.
In the example, we are presented with a video image of a stone having two defected areas. If we
analyze the stone as it is, then the predicted polished will include defected areas.
Press button "DEFECT". A new window will be opened and you will be able to start marking
and removing defected areas.

STONE: the weight of the stone after having the defects removed

DEFECTS: the total weight of all defects

TOTAL: the total weight of a stone (defects included)

4.2.2 Removing defected areas.

Attention! Marking the defected areas for their removal, is very similar to manual marking of the
sawing surface.

1) Use button "CONTRAST" in order to receive a video image of the stone so you are able

to identify defected areas in the stone.

2) Mark the defected area with some crosses using your mouse. Those will serve as support

points through which there will be drawn a cutting surface. In order to receive a cutting
surface you need three dots at least. To receive a more accurate result use button "180" in
order to rotate the stone and marking dots on both sides. In order to delete the last marked
dote use button "UNDO".

3) Press button "REMOVE" in window "DEFECTS REMOVING". There will appear a

new line on the stone. This is a simulation of the cutting line, which separates the
defected part from the rest of the stone. You can utilize a new line for stone analysis, as if
the defect is cut away.

4) Continue marking the defected areas. Each time you press button "REMOVE", a new

yellow line will indicate the location of an area to be removed. Previous lines become
blue.

4.2.3 Defect control.

To control the defects you should use window called "DEFECT REMOVING".
***use button "REMOVE" in order to mark a new defected area
***use buttons "PREV" and "NEXT" to move along the sawing lines
***use button "RESTORE" to cancel the cutting of the defected areas
***use button "RESTORE ALL" to restore the stone to its initial condition, canceling all marks
of defected areas.

When marking the defected areas you can spin the stone so it is easier to view it. Returning
to the main window you will see that on the three-dimensional image of the stone the
defected areas have a different color.