Henan Yuda Crystal Co.,Ltd
| Payment Terms | 100% Payment In Advance |
| Supply Ability | 50000carats per month |
| Delivery Time | 1-7 Working Days Depends On Quantity |
| Packaging Details | Carton box |
| Product Name | HPHT Lab Grown Diamonds |
| Brand | Yuda Crystal |
| Grade | High |
| Assortment | Good |
| Color | DEF |
| Clarity | VVS VS SI |
| Carat Weight | 1.0-18.0ct |
| Cut | Uncut |
| Technology | HPHT |
| Shape | Rough, Raw |
| Usage | For Cutting Lab Grown Diamonds |
| Component | Carbon |
| Hardness | Moh's 10 Scale |
| Available Type | HPHT |
| Place Of Origin | Zhengzhou, China |
| Payment Mode | T/T, Bank Transfer, PayPal, Western Union |
| Courier | DHL, FedEx, UPS, TNT, EMS etc |
| Packaging | As Export Standard |
| Customization | Welcome |
| Polish | None |
| Symmetry | None |
| Sample Order | Welcome |
| Treatments Applied | None |
| Enhancement | None |
| Brand Name | YUDA CRYSTAL |
| Model Number | YD-A+ |
| Certification | None |
| Place of Origin | Zhengzhou, China |
View Detail Information
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Product Specification
| Payment Terms | 100% Payment In Advance | Supply Ability | 50000carats per month |
| Delivery Time | 1-7 Working Days Depends On Quantity | Packaging Details | Carton box |
| Product Name | HPHT Lab Grown Diamonds | Brand | Yuda Crystal |
| Grade | High | Assortment | Good |
| Color | DEF | Clarity | VVS VS SI |
| Carat Weight | 1.0-18.0ct | Cut | Uncut |
| Technology | HPHT | Shape | Rough, Raw |
| Usage | For Cutting Lab Grown Diamonds | Component | Carbon |
| Hardness | Moh's 10 Scale | Available Type | HPHT |
| Place Of Origin | Zhengzhou, China | Payment Mode | T/T, Bank Transfer, PayPal, Western Union |
| Courier | DHL, FedEx, UPS, TNT, EMS etc | Packaging | As Export Standard |
| Customization | Welcome | Polish | None |
| Symmetry | None | Sample Order | Welcome |
| Treatments Applied | None | Enhancement | None |
| Brand Name | YUDA CRYSTAL | Model Number | YD-A+ |
| Certification | None | Place of Origin | Zhengzhou, China |
| High Light | VVS Rough White Lab Diamond ，Big HPHT Synthetic diamond ，VVS 2 Carat Man Made Diamond | ||
Yuda Crystal VVS Rough Lab Grown White Big Size Synthetic HPHT Man Made Diamonds
Synthetic HPHT Man Made Diamonds Description
Synthetic diamond is a kind of imitation of natural mineral, which is no inferior to the original stone. Is the diamond made in the laboratory real? Of course, they are! Man made diamonds have no defects and are cleaner and harder than natural diamonds.
Synthetic diamonds are produced in the laboratory in several ways. Manufacturing them requires expensive equipment and high-quality raw materials.
Several technologies are being used to produce laboratory grown diamonds.
The first method is called HPHT or thermogravimetry (temperature and pressure). The pressure diamonds produced in this way are relatively cheap because of the low cost. The bottom line is to heat (1500 degrees) carbon at high pressure (50000 – 70000 environments) with the help of catalyst metals.
CVD is a chemical vapor deposition method. CVD diamond grown by this method is used in optical and electronic fields. Hydrocarbon gas (methane) is deposited on silicon wafer by heating (3100 degrees) or microwave radiation. The film thickness is 2-3 mm.
Explosive fusion. Graphite produces an artificial replica under the high pressure of an explosive explosion.
Ultrasonic cavitation. Under normal conditions, graphite suspension was added into organic solvent, and artificial minerals were grown under ultrasonic cavitation.
High pressure and high temperature
Chemical vapor deposition
At present, the first two methods are the most popular.
Parameters of Synthetic HPHT Man Made Diamonds
| Synthetic HPHT Man Made Diamonds Details | |
| Brand Name | Yuda Crystal |
| Name | Rough Lab Grown Diamonds |
| Diamond Color | D-F |
| Diamond Clarity | VVS-SI |
| Diamond Carat Weight | 1ct- 18ct |
| Diamond Cut | Uncut |
| Technology | HPHT |
| Size | 5.0-20.0mm |
| Shape | Raw |
| 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) |
Synthetic HPHT Man Made 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 | $$$$$ | $$$ |
Synthetic HPHT Man Made Diamonds Details
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Exporter,Seller
Year Established:
2016
Total Annual:
50 Million-200 Million
Employee Number:
10~50
Ecer Certification：
Verified Supplier
Yuda Crystal is one of the world's leading lab grown diamond companies, mainly active in fields: Gem quality lab grown rough(Including HPHT and CVD) diamonds manufacturing and wholesale, lab grown polish diamonds manufacturing and wholesale, Industrial grade HPHT and CVD lab grown diamonds ... Yuda Crystal is one of the world's leading lab grown diamond companies, mainly active in fields: Gem quality lab grown rough(Including HPHT and CVD) diamonds manufacturing and wholesale, lab grown polish diamonds manufacturing and wholesale, Industrial grade HPHT and CVD lab grown diamonds ...
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