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Categories | CVD Rough Diamonds |
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Brand Name: | Yuda Crystal |
Model Number: | RBC |
Certification: | None |
Place of Origin: | Zhengzhou, China |
MOQ: | Negotiate |
Price: | Negotiate |
Payment Terms: | 100% Payment In Advance |
Supply Ability: | 50000carats per month |
Delivery Time: | 1-7 working days |
Packaging Details: | Carton box |
Product Name :: | HPHT Rough Diamonds |
Color: | GHI |
Clarity: | VS+ |
Carat Weight: | 8-8.99ct |
Technology: | HPHT |
Usage: | For Cutting Lab Grown Diamonds |
Payment Mode: | T/T, Bank Transfer, PayPal, Western Union |
Delivery time: | 1-7 Working Days Depends On Quantity |
Courier: | DHL, FedEx, UPS, TNT, EMS etc |
Packaging: | As Export Standard |
Hardness: | Moh's 10 Scale |
Shape: | Rectangular |
Cut: | Uncut |
Company Info. |
Henan Yuda Crystal Co.,Ltd |
Verified Supplier |
View Contact Details |
Product List |
VS+ Purity HPHT Lab Created Dinmonds White Synthetic Rough Diamonds For Sale
Lab Created Diamonds Description
Cultivated diamond is synthesized by artificial simulation of
natural diamond crystallization conditions and growth environment,
and natural diamond has exactly the same physical, chemical and
optical properties. Production time is perhaps the biggest
difference between the two types of diamonds, with natural diamonds
taking hundreds of millions of years to form and cultured diamonds
taking just a few weeks to produce.
Scientists have mastered how to grow a diamond in a laboratory,
which is much cheaper than mining natural diamonds.
1. High pressure high Temperature method (HPHT)
Growing diamonds requires an indispensable element: carbon (C). In
the process of growing HPHT diamonds, pure carbon powder is
compressed into a growth capsule and then placed in a incubation
chamber at pressures of 5-6 gpa and extremely high temperatures (up
to 1300-1600°C) day in and day out. Eventually the carbon atoms
join together to form a diamond crystal. Many large diamonds over
10 carats can be produced in one go in less than two weeks.
2.Chemical vapor Deposition (CVD)
Breeding process of chemical vapor deposition method is as follows:
first, place a piece of diamond chips in a vacuum box, the next in
the chamber filled with a mixture of hydrogen and methane gas, the
gas provides a carbon atom, under the pressure of certain heating,
until the gasification of carbon atoms on the thin layers and
layers of sedimentary, like rain, forming uniform diamond coating.
It takes nearly a month to grow a one-carat CVD diamond crystal.
Parameters Of Artificial Lab Created Diamonds
Product Name | Synthetic (Lab created) diamond |
Technology | HPHT |
Color | D-F |
Size | 8-8.99CT |
Grade | VVS VS |
Used | Jewelry (necklace,ring,watch) |
Application | For Cutting Lab Grown Loose Diamonds |
Place Of Origin | Zhengzhou, China |
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