Good Color EF Color Without HPHT Process CVD Lab Grown Diamonds For
Making DEF Color VVS VS Cvd Diamonds
CVD Lab Grown Diamonds Description
What is a lab-grown diamond?
Lab diamonds are real diamonds. Lab-grown diamonds after polishing
and cutting are no different from natural diamonds. Carbon is the
main element of natural and laboratory-grown diamonds. 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.
Beginning in the 1930s, scientists discovered that certain types of
diamonds have similar characteristics, so they divided diamonds
into two categories based on the difference in transparency under
ultraviolet radiation: Type I and Type II. Subsequently, the
scientists further divided type I and type II diamonds into two
sub-categories: type Ia, type Ib, type IIa and type IIb through the
arrangement of carbon atoms and impurity atoms in the diamond
structure.
Most synthetic diamonds are of type Ib, IIa and IIb.
HTHP and CVD are the two main methods for making laboratory-grown
diamonds.
First of all, what are HTHP and CVD?
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.
Parameters of CVD Lab Grown Diamonds
| CVD Lab Grown Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | CVD Lab Grown Diamonds |
| Diamond Color | D-F |
| Diamond Clarity | VVS-SI |
| Diamond Carat Weight | 8.0-10.0carat |
| Diamond Cut | Round and fancy cut |
| Technology | CVD |
| 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) |
CVD 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 | $$$$$ | $$$ |
CVD Lab Grown Diamonds Details
