3mm 4mm 5mm Rough Lab Grown Diamonds D E Color VVS VS Clarity
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:||Rough Lab Grown Diamonds||Brand:||Yuda Crystal|
|Carat Weight:||4.0-20.0mm||Cut:||Rough, Uncut|
|Technology:||CVD||Shape:||Rough, Raw, Square|
|Usage:||For Cutting CVD Round Shape Diamonds||Component:||Rough Lab Grown Diamonds|
|Hardness:||Moh's 10 Scale||Available Type:||HPHT, CVD|
|Place Of Origin:||Zhengzhou, China||Payment Terms:||100% Payment In Advance|
|Delivery Time:||1-15 Working Days Depends On Quantity||Courier:||DHL, FedEx, UPS, TNT, EMS Etc|
|Packaging:||As Export Standard||Customization:||Welcome|
|Sample Order:||Welcome||Treatments Applied:||None|
6.5mm Rough Lab Grown Diamonds,
7.5mm Rough Lab Grown Diamonds,
Chemical Vapor Deposition Diamonds
DEF Color VVS VS Clarity Rough Lab Grown Diamonds Made By Chemical Vapor Deposition Method
Rough Lab Grown Diamonds Description
Lab-grown diamonds are diamonds grown in the laboratory using equipment that simulate the growth environment of natural diamonds. Both laboratory-grown diamonds and natural diamonds are real diamonds. The main chemical components of laboratory-grown diamonds and natural diamonds are carbon.
HTHP and CVD are the two main methods for making laboratory-grown diamonds.
HTHP: High temperature and high pressure method (HTHP) uses graphite as raw material, introduces suitable metal catalysts, such as Fe, Co, Ni, Mn, Cr, etc., and can synthesize diamond at temperatures above 2000K and tens of thousands of atmospheres.
CVD: Chemical Vapor Deposition (CVD) is a method of decomposing raw materials at high temperatures to produce active particles such as carbon atoms or methyl groups, and depositing and growing a diamond film on the substrate (substrate) under certain process conditions Methods.
How to distinguish HTHP and CVD diamonds?
HTHP: Due to the use of metal catalysts in the HTHP method, some metal will inevitably enter the crystal during the growth process, so it is magnetic. If the cleanliness is poor, it has strong magnetism. This probe cannot pass the latest drilling probes.
CVD: Since CVD is a method of depositing and growing a diamond film on a substrate (substrate), it is easy to see the layered structure and water ripple-shaped growth pattern of CVD under a 10x magnifying glass, which is easily distinguished from natural diamond.
Although both HPHT and CVD methods require the use of diamond crystal seeds to grow diamonds, they use different machines and scientific principles to grow laboratory diamonds. The laboratory-grown diamonds grown by the two methods have different shapes. It is easy to distinguish which is HPHT rough diamond and which is CVD uncut diamond.
Parameters of Rough Lab Grown Diamonds
|Rough Lab Grown Diamonds Details|
|Brand Name||Yuda Crystal|
|Name||Rough Lab Grown Diamonds|
|Diamond Carat Weight||4.0-12.0 carat|
|Diamond Cut||Uncut, Raw, Rough|
|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)|
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|
Rough Lab Grown Diamonds Details