DEF Color VVS VS Clarity Rough Lab Grown Diamonds Made By HPHT
Rough Lab Grown Diamonds Description
Lab-grown diamonds are diamonds grown in the laboratory using
equipment that simulate the growth environment of natural diamonds.
Both laboratory-grown diamonds and natural diamonds are real
diamonds. The main chemical components of laboratory-grown diamonds
and natural diamonds are carbon.
HTHP and CVD are the two main methods for making laboratory-grown
diamonds.
HTHP: 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.
CVD: 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.
How to distinguish HTHP and CVD diamonds?
HTHP: Due to the use of metal catalysts in the HTHP method, some
metal will inevitably enter the crystal during the growth process,
so it is magnetic. If the cleanliness is poor, it has strong
magnetism. This probe cannot pass the latest drilling probes.
CVD: Since CVD is a method of depositing and growing a diamond film
on a substrate (substrate), it is easy to see the layered structure
and water ripple-shaped growth pattern of CVD under a 10x
magnifying glass, which is easily distinguished from natural
diamond.
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.
Parameters of Rough Lab Grown Diamonds
| Rough Lab Grown Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | Rough Lab Grown Diamonds |
| Diamond Color | D-F |
| Diamond Clarity | VVS-SI |
| Diamond Carat Weight | 4.0-12.0 carat |
| Diamond Cut | Uncut, Raw, Rough |
| Technology | HPHT |
| Size | 5.0-20.0mm |
| Shape | Square |
| 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) |
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 | $$$$$ | $$$ |
Rough Lab Grown Diamonds Details
