E F Color VVS VS 12Ct 12.5Ct 13Ct CVD Rough Diamonds For 4 Carat Polish Diamond
Contact Person : Li
Phone Number : +86 371 53395413
WhatsApp : +8615225124915
|Minimum Order Quantity :||Negotiate||Price :||Negotiate|
|Packaging Details :||Carton box||Delivery Time :||1-15 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|
|Product Name:||CVD Lab Grown Diamonds||Brand:||Yuda Crystal|
|Technology:||CVD||Shape:||Rough, Raw, Rectangular|
|Usage:||For Cutting CVD Diamonds||Component:||Carbon|
|Hardness:||Moh's 10 Scale||Available Type:||HPHT, CVD|
|Place Of Origin:||Zhengzhou, China||Payment Terms:||100% Payment In Advance|
|Payment Mode:||T/T, Bank Transfer, PayPal, Western Union||Delivery Time:||1-15 Working Days Depends On Quantity|
|Courier:||DHL, FedEx, UPS, TNT, EMS Etc||Packaging:||As Export Standard|
7mm Rough CVD Diamond,
6mm Rough CVD Diamond,
5mm DEF Color Diamond
Rectangular Shape 5mm - 7mm DEF Color Rough CVD Diamond Price Per Carat
CVD Lab Grown Diamonds Description
The laboratory-grown diamonds are grown in the laboratory, they are composed of carbon atoms, have the same physical properties and chemical composition as natural diamonds, and have fewer impurities and higher purity than natural diamonds. And it's cheaper.
There are two techniques for growing diamond in the laboratory, one is the high temperature and high pressure method. This method is the most widely used, but this process will use a catalyst to mix the diamond with impurities, so most diamonds are used in industrial fields. The other is chemical vapor deposition. This method can obtain high-purity diamond without a catalyst.
What is the essential difference between natural diamonds and cultivated diamonds, mainly in the following points:
1. Formation time
Natural diamonds are formed under high temperature and high pressure due to geological reasons, and it takes tens of thousands or even tens of millions of years to produce. Cultivated diamonds are cultivated in about one to three weeks.
2. Crystal shape
The formation temperature of natural diamonds and laboratory-grown diamonds is almost the same, but natural diamonds will grow into octahedral crystals, while lab diamonds can grow into crystals that contain both octahedrons and cubes.
Natural diamonds are colorless, light yellow and other colors. At present, better quality lab diamonds can also achieve colorless or light brown, which is almost unrecognizable to the naked eye.
Parameters of CVD Lab Grown Diamonds
|CVD Rough Diamonds Details|
|Brand Name||Yuda Crystal|
|Name||CVD Rough Diamonds|
|Diamond Carat Weight||4.0-7.0carat|
|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|
|Diamond Type||Synthetic(lab created)|
|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)|
CVD 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 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|
|SP3 Carbon Diamond Bonds (%)||100%||100%|
|Internal Crystal Structure||Face-Centered Cubic||Face-Centered Cubic|
|Color||Various Grades||K to D grades|
CVD Lab Grown Diamonds Details