6.0Ct Up Lab Created Diamonds Square Shape Lab Diamonds EFG Color
HPHT Rough Diamonds
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.
| Lab grown & natural diamonds |
| lab grown diamonds | natural diamonds |
| grown in a lab | mined from the earth |
| created in months | created over billions of years |
| offer incredible value | prized for their rarity |
Specification
| Item | Value |
| Brand name | Yuda Crystal |
| Model number | YuDa-CVD Diamond |
| Place of origin | Henan,China |
| Usage | Jewellery,rings,for polished |
| Hardness | 10 Moh's |
| Payment term | 100% payment in advance |
| Shipping ways | DHL,FEDEX,UPS.EMS |
| Delivery Time | 3-14 Working Days Base on Order Quantity |
Are lab created diamond Real?
Sure. There is no obvious difference between the Lab Grown Rough
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.
Who are we?
Henan YuDa Crystal Co., Ltd. are based in ZhengZhou city.We are
specialized in the export and import business of lab grown diamonds
more than 10 years. YuDa is a professional company in all synthetic
diamond applications, our main products are cvd diamond, hpht
diamond, and customized diamond by your requirements. Our products
enjoy a good reputation and are sold to Europe, America, Southeast
Asia, South Africa and other countries and regions.
FAQ
Q:Do you provide samples? Is it free or not?
A: Yes, we provide samples,but not for free.
Q:What are your terms of payment?
A: We accept Paypal,T/T,Western Union and MoneyGram.
Q: Which express company do you use?
A: As usual we used DHL,UPS ,FEDEX Or Brinks.
Lab Grown Rough Diamonds Details
