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Brand Name : YUDA CRYSTAL
Model Number : YD-A+
Certification : None
Place of Origin : Zhengzhou, China
MOQ : Negotiate
Price : Negotiate
Payment Terms : 100% Payment In Advance
Supply Ability : 50000carats per month
Delivery Time : 1-15 Working Days Depends On Quantity
Packaging Details : Carton box
Product Name : HPHT Rough Diamonds
Brand : Yuda Crystal
Grade : High
Assortment : Good
Color : DEF
Clarity : VVS VS
Carat Weight : 10.0-11.0ct
Cut : Uncut
Technology : HPHT
Shape : Rough, Raw
Usage : For Cutting HPHT 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
Square Shape VS Clarity 10.0 - 11.0 Carat HPHT Rough Diamonds For 3carat Big Size Diamond HPHT Jewelry
HPHT Lab Grown Diamonds Description
Lab created diamonds are grown by simulating the growth environment of natural diamonds through high temperature and high pressure or chemical vapor deposition method. The chemical, physical, atomic, and optical properties of lab grown diamonds are the same as natural diamonds. we call them laboratory-grown diamonds.
 CVD (Chemical Vapor Deposition) diamond is based on a loose natural diamond stone as the parent stone, using high-purity methane, plus hydrogen, nitrogen and other gases to assist, in a microwave oven at high pressure to make methane the same carbon as diamonds Molecules continue to accumulate on the rough diamond, and after a layer of proliferation, a transparent diamond as large as 10 carats can be formed.
 Another method is HPHT(high temperature and high pressure), which uses metal elements as catalysts to simulate the temperature and pressure environment produced by natural diamonds for lab grown diamond growth.
 As the first generation of diamond growth technology, high temperature and high pressure technology can completely simulate the growth process of natural diamonds, reproduce the reaction of the carbon layer on the ground, and convert graphite into diamonds.
 At present, the popular high temperature and high pressure synthetic diamond equipment in the world mainly includes two side tops, six side tops and strip split ball or improved split ball.
Parameters of HPHT Lab Grown Diamonds
| HPHT Rough Diamonds Details | |
| Brand Name | Yuda Crystal | 
| Name | HPHT Rough Diamonds | 
| Diamond Color | DEF | 
| Diamond Clarity | VVS-VS | 
| Diamond Carat Weight | 10.0-11.0carat | 
| Diamond Cut | Uncut | 
| Technology | HPHT | 
| Size | Customization | 
| Shape | Raw, Square | 
| Application | For Cutting Lab Grown HPHT 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) | 
CHPHT Lab Grown 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 Lab Grown Diamonds Details

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| Square VS 10.0 Carat 11.0 Carat HPHT Rough Diamonds Pure Uncut Diamonds For Jewelry Images | 
 Rectangular DEF Color 8.0 9.0 Carat HPHT Rough Diamonds For Enagement Ring
                                                                                        
                                                        
                        
                        
                        
                                                            Rectangular DEF Color 8.0 9.0 Carat HPHT Rough Diamonds For Enagement Ring
                                                    
                        
                     VS SI 3.0ct 4.0ct 5.0ct HPHT Rough Diamonds Custom For 1 Carat Loose Diamond
                                                                                        
                                                        
                        
                        
                        
                                                            VS SI 3.0ct 4.0ct 5.0ct HPHT Rough Diamonds Custom For 1 Carat Loose Diamond
                                                    
                        
                     VS Plus 7.0 Carat 8.0 Carat HPHT Rough Diamonds Raw Unpolished Diamond For 2ct
                                                                                        
                                                        
                        
                        
                        
                                                            VS Plus 7.0 Carat 8.0 Carat HPHT Rough Diamonds Raw Unpolished Diamond For 2ct
                                                    
                        
                     EFG Color 10mm 12mm HPHT Diamond Lab Grown 8ct 12ct For DEF Loose Diamond
                                                                                        
                                                        
                        
                        
                        
                                                            EFG Color 10mm 12mm HPHT Diamond Lab Grown 8ct 12ct For DEF Loose Diamond
                                                    
                        
                     Rectangular 7mm 9mm DEF Color HPHT Rough Raw Diamond For Ring
                                                                                        
                                                        
                        
                        
                        
                                                            Rectangular 7mm 9mm DEF Color HPHT Rough Raw Diamond For Ring
                                                    
                        
                     D E F Color VVS VS 12Ct 12.5Ct 13Ct HPHT Rough Diamonds For 4 Carat Polish
                                                                                        
                                                        
                        
                        
                        
                                                            D E F Color VVS VS 12Ct 12.5Ct 13Ct HPHT Rough Diamonds For 4 Carat Polish
                                                    
                        
                     5mm To 7mm DEF Color Rough HPHT Diamond Rectangular Shape
                                                                                        
                                                        
                        
                        
                        
                                                            5mm To 7mm DEF Color Rough HPHT Diamond Rectangular Shape
                                                    
                        
                     EFG VVS VS SI 14.0 To 15.0 Carat CVD Diamond
                                                                                    
                        
                        
                        
                                                            EFG VVS VS SI 14.0 To 15.0 Carat CVD Diamond
                                                    
                        
                     5.0ct 6.0ct CVD Rough Diamonds
                                                                                    
                        
                        
                        
                                                            5.0ct 6.0ct CVD Rough Diamonds
                                                    
                        
                     VS+ Purity HPHT Lab Created Diamonds White Synthetic Rough Diamonds
                                                                                        
                                                        
                        
                        
                        
                                                            VS+ Purity HPHT Lab Created Diamonds White Synthetic Rough Diamonds