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| Price | Negotiate |
| MOQ | Negotiate |
| Delivery Time | 1-7 Working Days Depends On Quantity |
| Brand | YUDA CRYSTAL |
| Place of Origin | Zhengzhou, China |
| Certification | None |
| Model Number | YD-A+ |
| Packaging Details | Carton box |
| Payment Terms | 100% Payment In Advance |
| Supply Ability | 50000carats per month |
| Shape | Round and fancy cut | Customization | Welcome |
| Packaging Details | Carton box | Supply Ability | 50000carats per month |
| Place Of Origin | Zhengzhou, China | Technology | HPHT |
| Minimum Order Quantity | Negotiate | Component | Carbon |
| Courier | DHL, FedEx, UPS, TNT, EMS etc | Enhancement | None |
| Payment Mode | T/T, Bank Transfer, PayPal, Western Union | Symmetry | None |
| Usage | For Cutting HPHT Diamonds | Place of Origin | Zhengzhou, China |
| Cut | Round and fancy cut | Polish | None |
| Available Type | HPHT | Product Name | HPHT Lab Grown Diamonds |
| Color | DEF | Grade | High |
| Treatments Applied | None | Model Number | YD-A+ |
| Hardness | Moh's 10 Scale | Sample Order | Welcome |
| Clarity | VVS VS | Certification | None |
| Brand Name | YUDA CRYSTAL | Payment Terms | 100% Payment In Advance |
| Brand | Yuda Crystal | Assortment | Good |
| Price | Negotiate | Delivery Time | 1-7 Working Days Depends On Quantity |
| Packaging | As Export Standard | Carat Weight | 3-5ct |
7mm 8mm 3ct - 5ct Rough Synthetic HPHT Uncut Lab Diamonds For Carat Diamond Ring Making
HPHT Lab Grown Diamonds Description
Lab-grown diamonds are diamonds grown in the laboratory. Lab grown diamonds are chemically and structurally the same as natural diamonds.
HTHP and CVD are the two main methods for making laboratory-grown diamonds.
High temperature and high pressure method (HTHP) uses graphite as raw material, introduces suitable metal catalysts, such as Fe, Co, Ni, Mn, Cr, etc., and can synthesize diamond at temperatures above 2000K and tens of thousands of atmospheres.
Chemical Vapor Deposition (CVD) is a method of decomposing raw materials at high temperatures to produce active particles such as carbon atoms or methyl groups, and depositing and growing a diamond film on the substrate (substrate) under certain process conditions Methods.
Although
both
HPHT
and
CVD
methods
require
the
use
of
diamond
crystal
seeds
to
grow
diamonds,
they
use
different
machines
and
scientific
principles
to
grow
laboratory
diamonds.
The
laboratory-grown
diamonds
grown
by
the
two
methods
have
different
shapes.
It
is
easy
to
distinguish
which
is
HPHT
rough
diamond
and
which
is
CVD
uncut
diamond.
Whether
laboratory-grown
diamonds
or
natural
diamonds,
loose
diamonds
after
cutting
and
polishing
can
not
be
distinguished
by
the
naked
eye.
It
can
be
detected
only
with
the
help
of
professional
equipment.
With
professional
equipment,
the
comparison
of
the
color,
crystal
shape
and
crystal
surface
characteristics,
internal
inclusion
characteristics,
absorption
spectrum
and
ultraviolet
fluorescence
characteristics
of
the
tested
diamonds
can
"completely
distinguish
the
artificially
cultivated
diamonds
from
the
natural
diamonds
Parameters of HPHT Lab Grown Diamonds
| HPHT Lab Grown Diamonds Details | |
| Brand Name | Yuda Crystal |
| Name | HPHT Lab Grown Diamonds |
| Diamond Color | D-F |
| Diamond Clarity | VVS-VSI |
| Diamond Carat Weight | 3.0-5.0carat |
| Diamond Cut | Round and fancy cut |
| Technology | HPHT |
| Size | Customization |
| Shape | Round and fancy cut |
| Application | For Cutting Lab Grown Loose Diamonds |
| Place Of Origin | Zhengzhou, China |
| Delivery Time | 1 - 15 Working Days Base on Order Quantity |
| Payment Terms | 100% Payment In Advance |
| Payment Methods | T/T, PayPal, Western Union, Bank Transfer |
| Shipping way | DHL, FedEx, SF Express, UPS, EMS, TNT etc |
| M.O.Q | Negotiable |
| Diamond Type | Synthetic(lab created) |
| Location | Zhengzhou, China |
| Treatments Applied | None |
| Fire Dispersion | 0.044(Same as Natural Diamond) |
| Brilliance Refraction Index | 2.42(Same as Natural Diamond) |
| Relative Density | 3.52(Same as Natural Diamond) |
| Chemical Composition | Carbon(Same as Natural Diamond) |
| Moh's Hardness | 10(Same as Natural Diamond) |
HPHT Lab Grown Diamonds Introduction
Natural diamonds are created by nature and are the result of high temperature and pressure formed over billions of years. The Rough Lab Grown Diamonds are produced in the laboratory, usually in a few weeks. The chemical difference between the two is same.
So how do you distinguish between Rough Lab Grown Diamonds and natural diamonds?
There is no obvious difference between the Rough Lab Grown Diamonds and natural diamonds. Even professional gemologists need special equipment to identify them. By zooming in, professionals will be able to discern subtle contrasts in diamond inclusions grown and mined in the laboratory.
| The Difference Between Lab Diamond And Natural Diamond | ||
| Properties | Earth Mined | Lab Created |
| Guaranteed Conflict-Free | No | Yes |
| Hardness (MOHS) | 10 | 10 |
| SP3 Carbon Diamond Bonds (%) | 100% | 100% |
| Internal Crystal Structure | Face-Centered Cubic | Face-Centered Cubic |
| Hardness Comparable | 2.42 | 2.42 |
| Relative Diversity | 3.52 | 3.52 |
| Color Diffusion | 0.044 | 0.044 |
| Color | Various Grades | K to D grades |
| Price | $$$$$ | $$$ |
HPHT Lab Grown Diamonds Details
