Specifications
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 :
Rough Lab Grown Diamonds
Brand :
Yuda Crystal
Grade :
High
Assortment :
Good
Color :
DEF
Clarity :
VVS VS SI
Carat Weight :
0.2-0.6ct
Cut :
Uncut
Technology :
HPHT
Shape :
Raw, Uncut
Usage :
For Cutting Lab Grown Polished Diamonds
Component :
Carbon
Hardness :
Moh's 10 Scale
Available Type :
HPHT, CVD
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
Description

3mm 4mm 5mm D E Color VVS VS Clarity Rough Lab Grown Diamonds For Making Small Size Lab Diamonds

Rough Lab Grown Diamonds Description

The lab grown diamonds are also real diamonds. They have the same chemical composition and crystal structure as natural diamonds.

However, the manufacturing process of laboratory-grown diamonds uses advanced technology to simulate the formation conditions of natural diamonds under the earth's crust. This formation process is the main factor that distinguishes lab diamonds from natural diamonds. After all, in terms of chemical, optical and physical properties and crystal structure, lab grown diamonds are basically the same as natural diamonds. Although the place and conditions of formation are different, the essence is the same.

So how are cultivated diamonds made? Two methods are mainly used now. One is the high-pressure high-temperature method (HPHT), which creates high-pressure and high-temperature environments in laboratories or factories to produce diamonds, which is to imitate the formation conditions of natural diamonds in the depths of the earth. In the growth chamber, the carbon source is decomposed in the molten metal, and the carbon atoms are gathered on a small cultivated or natural diamond seed through the metal to form a cultivated diamond crystal with a unique shape.

The second is chemical vapor deposition (CVD), which uses carbon-rich gas (such as methane) in the vacuum chamber of the laboratory to produce cultivated diamonds. The production process of the CVD process is to first decompose the methane gas molecules into carbon and hydrogen atoms, and then deposit them on the diamond seed crystals to form square flat cultivated diamond crystals.

It usually takes several weeks to manufacture cultivated diamonds in the laboratory. Compared to the millions or even billions of years of formation of natural diamonds deep in the earth, this time is very short.


Parameters of Rough Lab Grown Diamonds

Rough Lab Grown Diamonds Details
Brand Name Yuda Crystal
Name Rough Lab Grown Diamonds
Diamond Color D-F
Diamond Clarity VVS-SI
Diamond Carat Weight 0.2 - 0.6 carat
Diamond Cut Uncut
Technology HPHT
Size 3.0-5.0mm
Shape Raw
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
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)

Rough 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 $$$$$ $$$

Rough Lab Grown Diamonds Details

3mm 4mm 5mm Rough Lab Grown Diamonds D E Color VVS VS Clarity

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3mm 4mm 5mm Rough Lab Grown Diamonds D E Color VVS VS Clarity

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Brand Name :
YUDA CRYSTAL
Model Number :
YD-A+
Certification :
None
Place of Origin :
Zhengzhou, China
MOQ :
Negotiate
Price :
Negotiate
Contact Supplier
video
3mm 4mm 5mm Rough Lab Grown Diamonds D E Color VVS VS Clarity
3mm 4mm 5mm Rough Lab Grown Diamonds D E Color VVS VS Clarity
3mm 4mm 5mm Rough Lab Grown Diamonds D E Color VVS VS Clarity

Henan Yuda Crystal Co.,Ltd

Verified Supplier
5 Years
henan, zhengzhou
Since 2016
Business Type :
Manufacturer, Distributor/Wholesaler, Agent, Exporter, Seller
Total Annual :
50 Million-200 Million
Employee Number :
10~50
Certification Level :
Verified Supplier
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