Contact Us

Contact Person : Li

Phone Number : +86 371 53395413

WhatsApp : +8615225124915

Free call

0.005ct 0.04ct 0.03ct HPHT CVD Melee Diamonds FG VS VVS Round Shape

Minimum Order Quantity : Negotiate Price : Negotiate
Packaging Details : Carton box Delivery Time : 1-7 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
Certification: None Model Number: YD-A+

Detail Information

Product Name: Lab Grown Melee Diamonds Brand: Yuda Crystal
Grade: High Assortment: Good
Color: FG Clarity: VVS VS
Carat Weight: 0.005-0.03ct Cut: Ideal, Excellent, VeryGood, Good
Technology: HPHT Shape: Round Brilliant Cut
Usage: For Making Lab Diamonds Jewelry(Rings, Earring, Necklace Etc ) 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: 1-7 Working Days Depends On Quantity
Courier: DHL, FedEx, UPS, TNT, EMS Etc Packaging: As Export Standard
Customization: Welcome Polish: Excellent, VeryGood, Good
Symmetry: Excellent, VeryGood, Good Sample Order: Welcome
Treatments Applied: None Enhancement: None
High Light:

0.04ct CVD Melee Diamonds FG


0.03ct CVD Melee Diamonds


0.005ct HPHT Melee Diamonds

Product Description

FG VS VVS 0.005ct - 0.03ct Per Pcs HPHT CVD Melee Diamonds For Diamond Jewellery


HPHT CVD Melee Diamonds​ Description


Nowadays people can use advanced technology to simulate the formation conditions of natural diamonds under the earth's crust to create lab grown diamonds. This formation process is the main factor that distinguishes lab-created diamonds from mined diamonds. The chemical, optical and physical properties and crystal structure of lab grown rough diamonds are basically the same as natural diamonds. Although the place and conditions of formation are different, the essence is the same.
Lab grown diamonds is usually produced by chemical vapor deposition (CVD) or high pressure high temperature (HPHT) methods.

1. High pressure and high temperature (HPHT)

The laboratory simulates the high temperature and pressure conditions of natural diamonds when they are formed underground. HPHT diamonds are manufactured at a pressure of 5-6 GPA and a temperature of 1300-1600°C.
Low-quality natural diamonds and unprocessed natural diamonds can be processed through the HPHT process to improve color and clarity. In addition to increasing the color grade of colorless diamonds.

2. Chemical Vapor Deposition (CVD)
Scientists are able to manufacture synthetic diamonds at moderate temperatures (700°C to 1300°C) and low pressures by using CVD technology. The carbon-containing gas is pumped into the vacuum chamber, deposited on the diamond seed, and crystallized into rough laboratory-grown diamonds. The final size of the diamond depends on the time allowed to grow.

Can we distinguish between laboratory grown diamonds and natural diamonds?
Yes it is. However, only diamond professionals can identify the difference between laboratory grown diamonds and natural diamonds by using professional diamond identification equipment.


Parameters of HPHT CVD Melee Diamonds

Lab Grown Melee Diamonds Details
Brand Name Yuda Crystal
Name Lab Grown Melee Diamonds
Diamond Color FG
Diamond Clarity VVS-VS
Diamond Carat Weight 0.005-0.03 carat
Diamond Cut Excellent, Very Good,Good
Polish Excellent, Very Good,Good
Symmetry Excellent, Very Good,Good
Technology HPHT
Size 1mm - 2mm
Shape Round
Diamond Enhancement None
Available Type HPHT, CVD
Diamond Certificate None
Application Jewelry Decorations Rings Earring Necklace
Place Of Origin Zhengzhou, China
Delivery Time 1 - 7 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)


HPHT CVD Melee 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
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 $$$$$ $$$


HPHT CVD Melee Diamonds Details


0.005ct 0.04ct 0.03ct HPHT CVD Melee Diamonds FG VS VVS Round Shape 0

You Might Be Into These
Get in touch with us

Enter Your Message
+86 15225124915