Alkor D presentation

1. PERFECT
DIAMONDS
CREATED
BY MAN

2. Alcor-D is an innovative European company
whose activity is the growing of HPHT diamond
single crystals, aswell as selling, both rawmaterials
and synthetic diamonds.
More than 30 professionals and scientific experts
produce gem-quality products with the help of
modern technological equipment, and following
their own know-how.
BLUE FANCY INTENSE AND
FANCY VIVID MAINLY
COLORLESS FROM D TO H
YELLOW FANCY INTENSE
AND FANCY VIVID MAINLY
HPHTROUGHANDCUTEDDIAMONDS
WITHCLARITYMAINLYVVS,VS

3. THE SIZE RANGE OFDIAMONDS IS
0.01 - 7.2 CTS
CLASSICAND FANTASY
SHAPES OFDIAMONDS
EXLUSIVE PRODUCTION
Currently the production capabilities of the
company Alkor-D is growing from 500 carats
to 1500 carats per month. In future we are going
to grow 10 000 carats per month.
The synthesis of diamonds is carried out in our
own research laboratories using cubic Synthetic
Diamond Hydraulic Presses.
Diamonds are cut in the factory which has
50-years old historyand preserves thetraditions of
cutting diamonds “Russian Cut”.

4. HPHT TECHNIQUE CONSISTS IN A GROWING
OF DIAMOND SINGLE CRYSTALS UNDER HIGH
TEMPERATURE AND HIGH PRESSURE
ABOUT 1500 ° C, WITH THE DESIRED
GRADIENT AND ABOUT 50-70 THSD ATM.
Graphite powder is compressed into a small sheet.
Small diamond seed of approximately 0.5 mm size is
placed on it. When all elements ofthe future diamond
are ready, theyare placed in a special cell,which is able
to withstand tremendous pressure and temperature
in the following order: seed crystal on the bottom,
metal alloy (catalyst) and a carbon source in the form
of pressed graphite. Then the growth cell is placed
to a special laboratory equipment (hydraulic press of
high-pressure) where the chemical processes occur.
Metal is melted, the graphite is dissolved in the metal
and deposited on the seed diamond, which builds
new crystalline bonds.
This process allowing to grow a synthetic diamond
and can last from 4 to 10 days. Furthermore, it can
make a large-sized synthetic diamond.

5. THE ETCHING PROCESS
The process of etching is an extraction of monocrystals
from metal, which was formed during the synthesis.
Growing cells filled with synthesis product are poured
with (1,0 ±10) L. of nitric acid and then boiled during
(40±5) minutes until complete melting of metal.
Thereafter, the container is left to cool.
After cooling, containers are filled with water
(1,20±0,10) L. and are leaving until 10-15 minutes.
Then washing liquid is carefully poured into a separate
container to avoid of roiling of precipitate.
Monocrystals that stood out, are gently pulled out
from the growing cells.
The remaining precipitate is transferred to a container
and the cycle of etching is repeating all over again to
complete the extraction process of crystals from the
synthesis product.

6. Alcor-D cooperates with one of the most
powerful diamond cutting enterprises in
Ukraine, which was founded in 1969 and
in Soviet times it was part of
the Crystal System.
Long experience of the partner plant and
modern production facilities allow to obtain
the highest quality of cut diamonds.
CLASSICAL DIAMOND CUTTING
“RUSSIAN CUT” AND FANTASY SHAPES
THE AVERAGE PROFESSIONAL
WORK EXPERIENCE IN THE INDUSTRY IS
OVER 30 YEARS
ABOUT 1,000 UNITS OF MODERN
CERTIFIED EQUIPMENT

7. THE CUT OF A DIAMOND IS CARRIED
OUT WITH THE HELP OF MODERN
TECHNOLOGICAL EQUIPMENT:
OGI ScanoxS - analyzer of diamond rough and
finished products;
OGI Marker Pique - a modern computer marking
system;
ABM CUT, ABM Coning - automatic roughing
machine;
Sarine Qazar - laser equipment for cutting
diamonds;
Sarine Dioscan S9 - scanning system fordiamond
grading;
Dia Mension HD-system forthe evaluation ofthe
diamond high resolution;
Polished Diamonds Cleaner machine (Ice
stones LTD) - acid-free cleaning system.

8. EACH LAB-CREATED DIAMOND PASSES
MULTILEVEL SYSTEM OF INTERNAL AND
EXTERNAL QUALITY CONTROL
The internal quality assessment is carried
out by certified specialists who are following
the world’s standards laboratories such as
GIA and IGI. Using the latest technology
and equipment, gemologists evaluate
the quality characteristics of diamonds,
which are based on a specially developed
technical specifications in accordance with
international quality standards.

9. CONTACTS
Ukraine, Kiev,
str. Mechnikov, 2.
+ 380 95 847 2778