5mm To 7mm DEF Color Rough CVD Diamond Rectangular Shape
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|
|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|
14Ct CVD Rough Diamonds,
13.5ct CVD Rough Diamonds,
13ct diamond uncut
Square Shape E F G Color VS Purity 13.0 - 14.0 Carat CVD Rough Diamonds For 4carat DEF Color Lab Diamonds
CVD Rough Diamonds Description
Lab created diamonds, as the name suggests, are diamonds made in a laboratory.
Many people may think that because they are grown in a laboratory, they are all fake diamonds. In fact, grow diamonds just uses advanced technology to simulate the environment in which diamonds are formed in the earth's crust, and then accumulate carbon atoms layer by layer to form lab grown rough stones. The lab created rough diamonds is no different from the natural diamond from the underground. Actually its physical and chemical properties are the same, and its molecular structure is the same, so there is no reason to suspect that it is a fake diamond, because no one can distinguish it with the naked eye.
High temperature and high pressure technology originated in the 1950s, and was initially mainly used in the aviation and military industries. In the last ten years, the quality and cost of gem grade synthetic diamond have reached the market level.
High pressure high temperature (HPHT) diamonds are made by simulating the high-temperature and high-pressure conditions of natural diamonds formed on the earth in the laboratory. This process can produce a unique shape of laboratory-grown diamond crystals, namely cubic octahedrons.
Synthetic diamond requires a carbon source, a high pressure of about 50 to 80 KB, and a high temperature of about 1350 degrees Celsius to 1800 degrees Celsius. In addition, a metal catalyst is also required. The carbon source is melted in the metal catalyst around it until it reaches the saturation point, after which they crystallize to form synthetic diamonds.
Parameters of CVD Rough Diamonds
|CVD Rough Diamonds Details|
|Brand Name||Yuda Crystal|
|Name||CVD Rough Diamonds|
|Diamond Carat Weight||13.0-14.0carat|
|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 Rough 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|
|SP3 Carbon Diamond Bonds (%)||100%||100%|
|Internal Crystal Structure||Face-Centered Cubic||Face-Centered Cubic|
|Color||Various Grades||K to D grades|
CVD Rough Diamonds Details