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Contact: Ms. Li
Company: Henan Yuda Crystal Co.,Ltd
Phone: 86-371-53395413
E-Mail: Send Inquiry
Date/Time:  6/1/21 9:22 GMT

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

Product 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

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 0
3mm 4mm 5mm Rough Lab Grown Diamonds D E Color VVS VS Clarity
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