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||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|
13Ct CVD Rough Diamonds,
12.5Ct CVD Rough Diamonds,
12Ct big uncut diamond
Square Shape E F Color VVS VS Clarity 12.0 Carat - 13.0 Carat CVD Rough Diamonds For Making 4carat Lab Grown Polish Diamond
CVD Rough Diamonds Description
Diamond is known as the hardest material in the world. According to the Mohs hardness scale, it is divided into 10 grades, and diamond is the highest grade. From the day when people know that diamond is composed of pure carbon, there are more and more researches on Lab Grown Diamonds. Now Lab Grown Diamonds industry has developed rapidly and is widely used in various industries.
There are two main methods to make lab grown diamonds. One is called HPHT(High Temperature and High Pressure) and another is CVD(Chemical Vapor Deposition)method.
High temperature and high pressure synthetic diamond technology originated in the 1950s, initially mainly used in aviation and military industry, in the last decade gem grade synthetic diamond in quality and cost has reached the level of marketization.
HPHT lab grown rough diamonds is produced by simulating the crystallization process of natural diamonds. When natural diamonds are formed in natural environment, there are often other elements mixed in, which makes some natural diamonds not completely transparent and will show specific colors. For example, some diamonds have a little pink, some with a little blue, some with a little bit of light yellow. Lab grown diamonds grow in the laboratory, which are less impurities than natural diamonds, so the purity and transparency will be higher.
Parameters of CVD Rough Diamonds
|CVD Rough Diamonds Details|
|Brand Name||Yuda Crystal|
|Name||CVD Rough Diamonds|
|Diamond Carat Weight||12.0-13.0carat|
|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