Contact Us

Contact Person : Li

Phone Number : +86 371 53395413

WhatsApp : +8615225124915

Free call

Round Shape HPHT Rough Diamond Lab Grown Natural DEF Color VVS Clarity

Minimum Order Quantity : Negotiate Price : Negotiate
Packaging Details : Carton box Delivery Time : 1-7 working days
Payment Terms : T/T, Western Union, PayPal, Bank Transfer Supply Ability : 50000carats per month
Place of Origin: Zhengzhou, China Brand Name: Yuda Crystal
Certification: None Model Number: RBC

Detail Information

Product Name :: HPHT Rough Diamond Color: DEF
Clarity: VVS VS SI Carat Weight: 1-6ct
Technology: HPHT Usage: For Cutting Lab Grown Diamonds
Payment Terms: 100% Payment In Advance 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
High Light:

Round Shape HPHT Rough Diamond


VVS Clarity Rough Diamond


HPHT Natural diamond

Product Description

Round Shape Uncut White DEF Color VVS VS Clarity HPHT Rough Diamond
Lab Grown Diamonds Description
Lab grown diamonds refers to the diamond with the same chemical composition, crystal structure and physical characteristics produced by certain technology and process flow in the laboratory or factory; It's polished gem-grade diamonds; Also known as technology diamond, synthetic diamond.
Cultured diamonds, also known as "synthetic diamonds", are artificially grown diamonds in a laboratory. At present, there are usually two ways to grow diamonds: HPHT (high temperature and pressure) and CVD (chemical vapor precipitation). Cultured diamonds have similar chemical composition, physical properties and crystal structure to natural diamonds, making it difficult to distinguish them with the naked eye.  
Due to the different natural environment, the molecular structure of artificial diamond is not the complete octahedral structure of natural diamond but a complex structure, which will produce phosphorescence phenomenon. With the maturity of artificial diamond production technology, its low cost, and can produce a variety of colors of diamonds and in the jewelry market. While synthetic diamonds from laboratories and factories have been around for decades, synthetic diamonds of gem-quality have only recently emerged. Synthetic diamonds were originally used for industrial purposes such as making cutting tools, but they are also used in jewelry. 
Characteristics Of Lab Grown Diamonds

The Difference Between Lab Diamond And Natural Diamond
AttributeLab Grown DiamondsNatural diamondDistinction
Chemical compositionC(carbon)C(carbon)No
Refractive index2.422.42No
Relative density3.523.52No
Hardness value90 GPA90 GPANo
Thermal conductivity2*103 W/M/K2*103 W/M/KNo
Thermal property0.8*10-6 K0.8*10-6 KNo


1016 OHM-CM

1016 OHM-CM



8.3*10-13 M2/N

8.3*10-13 M2/N


Lab grown diamonds are exactly the same as natural diamonds, no different.
Advantages Of Lab Grown Diamonds
Diamond has prominent advantages in cost performance, and its industry acceptance and standardization are increasingly strengthened.
High temperature and high pressure diamond technology is also developing. HPHT used to focus only on small gem-grade diamonds, but in recent years, many HPHT diamond manufacturing companies have also begun to produce large carats, some even more than 10 carats. HPHT diamonds can now be internally purified to VVS grade. The biggest advantage over CVD diamonds is the high level of colour.
But HPHT's adamantine luster is no better than CVD diamonds, and adamantine is usually the result of a very high refractive index and good cutting -- it's one of the sharkiest shiny transparent stones in the gemstone world. Diamonds Diamonds are undoubtedly the shiniest of all diamonds. The diamond-like sheen of CVD diamonds is almost as good as that of natural diamonds, while HPHT is not as good. So most of the jewelry industry will use HPHT diamond as cherry stone, because it is very good color, like a little cherry stone shiny, very perfect.

Lab Grown Diamonds Details
Round Shape HPHT Rough Diamond Lab Grown Natural  DEF Color VVS Clarity 0

Get in touch with us

Enter Your Message