10pointer 20pointer 30pointer Round Brilliant Cut DEF Color VVS-VS
HPHT Loose Diamonds
HPHT Loose Diamonds Description
Lab Grown Diamonds, also known as man made diamonds, cultured
diamonds and lab created diamonds, are grown in a highly controlled
laboratory environment using advanced technology. These synthetic
diamonds are made up of actual carbon atoms. Because they are made
of the same material as natural diamonds, they have the same
optical and chemical properties.
Can we distinguish between laboratory grown diamonds and natural
diamonds?
Yes it is. However, only diamond professionals can identify the
difference between laboratory grown diamonds and natural diamonds
by using professional diamond identification equipment.
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.
CVD stands for chemical vapor deposition, which is based on a
natural bare diamond. With the assistance of high-purity methane,
hydrogen, nitrogen and other gases, the carbon molecules in methane
and diamond are continuously accumulated on the original diamond in
a high-pressure way in a microwave oven. After layer by layer
proliferation, transparent diamond as large as 10 carats can be
formed.
Parameters of HPHT CVD Loose Diamonds
| HPHT CVD Loose Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | Lab Grown Melee Diamonds |
| Diamond Color | DEF |
| Diamond Clarity | VVS-VS |
| Diamond Carat Weight | 0.10ct - 0.30ct |
| Diamond Cut | Excellent, Very Good,Good |
| Polish | Excellent, Very Good,Good |
| Symmetry | Excellent, Very Good,Good |
| Technology | HPHT |
| Size | 3mm - 4mm |
| Shape | Round |
| Diamond Enhancement | None |
| Available Type | HPHT |
| Diamond Certificate | None |
| Application | Jewelry Decorations Rings Earring Necklace |
| Place Of Origin | Zhengzhou, China |
| Delivery Time | 1 - 7 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 CVD Loose Diamonds Introduction
Natural diamonds are created by nature and are the result of high
temperature and pressure formed over billions of years. The 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 Lab Grown Diamonds and natural
diamonds?
There is no obvious difference between the 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 CVD Loose Diamonds Details
