Send Message
Home ProductsHPHT Rough Diamond

Vs DEFG Color HPHT Rough Diamond Uncut Lab Grown Diamond For Loose Diamond

China Henan Yuda Crystal Co.,Ltd certification
China Henan Yuda Crystal Co.,Ltd certification
Customer Reviews

—— Nilesh


—— Rajesh

I'm Online Chat Now

Vs DEFG Color HPHT Rough Diamond Uncut Lab Grown Diamond For Loose Diamond

Vs DEFG Color HPHT Rough Diamond Uncut Lab Grown Diamond For Loose Diamond
Vs DEFG Color HPHT Rough Diamond Uncut Lab Grown Diamond For Loose Diamond Vs DEFG Color HPHT Rough Diamond Uncut Lab Grown Diamond For Loose Diamond Vs DEFG Color HPHT Rough Diamond Uncut Lab Grown Diamond For Loose Diamond

Large Image :  Vs DEFG Color HPHT Rough Diamond Uncut Lab Grown Diamond For Loose Diamond

Product Details:
Place of Origin: Zhengzhou, China
Brand Name: Yuda Crystal
Certification: None
Model Number: YD-A
Payment & Shipping Terms:
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

Vs DEFG Color HPHT Rough Diamond Uncut Lab Grown Diamond For Loose Diamond

Diamond Type: Synthetic (lab Created) Diamond Clarity: VVS,VS,SI
Size: 3.0-4.0 Ct Color: D,E,F
Technology: HPHT Material: Carbon
Usage: Jewellery,for Polishing Hardness: 10.0 Mohs Scale
Shape: Round Shape,Round Uncut Payment Term: 100% In Advance
Payment Mode: T/T, Bank Transfer, PayPal, Western Union Packaging: As Export Standard
Delivery Time: 1-15 Working Days Depends On Quantity Courier: DHL, FedEx, UPS, TNT, EMS Etc
Sample Order: Welcome Treatments Applied: None
High Light:

DEFG Color HPHT Rough Diamond


Vs Uncut HPHT Rough Diamond


DEFG Uncut Lab Grown Diamond

HPHT rough diamonds vs diamond DEFG color uncut lab grown diamond for loose diamond


The history of laboratory-grown diamonds


Since the first diamond was discovered more than 2500 years ago, this dazzling gem has been endowed with extremely high value. Until now, despite the discovery of more diamond mines, natural diamonds are still at the top of the jewelry consumption pyramid.

Compared with the long history of natural diamonds, cultivated diamonds born in the middle of the last century are considered new. However, thanks to the rapid development of technology, cultivating diamonds has already stepped out of the research and exploration stage, and the pace of its marketization is also accelerating, which has attracted attention from inside and outside the industry.


a. At the end of the 18th century, French chemist Lavoisier discovered that diamond is a simple crystal composed of carbon formed under high-pressure and high-temperature conditions in the deep part of the earth, providing a theoretical basis for later cultivating diamond technology.

b. In 1952, William Iverso, a scientist at the US Federal Silicon Carbide Corporation, used chemical vapor deposition (Chemical Vapor Deposition, referred to as CVD) to continuously deposit carbon-containing gas on the diamond seeds, gradually accumulating and hardening to form diamonds.

c.In 1954, General Electric’s “Super Pressure Project” leader, Dr. Hall, led the team to make a breakthrough in the field of diamond cultivation technology and gave birth to what the industry called “High Pressure High Temperature Synthetic Diamonds” (HPHT).

d. In 1963, China's first artificial fine-grained diamond was born. It was developed by the Institute of Geochemistry of the Chinese Academy of Sciences, the Institute of Physics of the Chinese Academy of Sciences, the Zhengzhou Sanma Research Institute, and the Academy of Geological Sciences.

e. In 1970, the General Electric Company of the United States successfully cultivated large-grain gem-quality diamonds through improved technology, but did not produce mass production.

f. May 22, 2015-IGI Hong Kong laboratory identified the world’s largest colorless HPHT cultivated diamond. The cultivated diamond weighs 10.02 carats. It is made from a record-breaking 32.26 carat cultivated rough diamond. No more than 300 hours.

g.In 2016, the International Grown Diamond Association (IGDA) was established, which is the world's first international non-profit organization in the lab-grown diamonds industry. The main purpose is to promote the development of laboratory-grown diamonds.

h. Starting on July 24, 2018, the US Federal Trade Commission (FTC) changed the definition of diamonds. After full consultation with the industry, the FTC pointed out that the sales staff must clearly disclose the fact that diamonds are artificially cultivated man-made and "ores", and explained that "cultured" or similar "man-made" should be used as much as possible. "made", "lab-grown", "foundry" and other words are used to name cultivated diamonds.

i. On March 9, 2020, IGI International Gemological Institute identified a 7.06 carat CVD cultivated diamond. The birth of this diamond also marks the maturity of high-quality, large-carat CVD cultivated diamond technology.


From the end of the 18th century to 2020, from the emergence of CVD and HPHT technology to the formal entry of lab created diamonds into the jewelry field, the development of cultivated diamonds has only more than a hundred years of history. Compared with natural diamonds and other gemstones, it is undoubtedly the jewelry industry New star.


Item Value
Brand name Yuda Crystal
Model number YuDa-HPHT
Place of origin Henan,China
Diamond weight 3.0-4.0 ct
White diamond color D E F
Diamond clarity VVS VS SI
Payment term 100% payment
Shipping ways DHL,FEDEX,UPS.EMS
Delivery Time 1 - 7 Working Days Base on Order Quantity

Lab grown & natural diamonds

Lab grown & natural diamonds
lab grown diamonds natural diamonds
grown in a lab mined from the earth
created in months created over billions of years
offer incredible value prized for their rarity

Who are we?

Henan YuDa Crystal Co., Ltd. are based in ZhengZhou city.We are specialized in the export and import business of lab grown diamonds more than 10 years. YuDa is a professional company in all synthetic diamond applications, our main products are cvd diamond, hpht diamond, and customized diamond by your requirements. Our products enjoy a good reputation and are sold to Europe, America, Southeast Asia, South Africa and other countries and regions.


Q:Do you provide samples? Is it free or not?
A: Yes, we provide samples,but not for free.
Q:What are your terms of payment?
A: We accept Paypal,T/T,Western Union and MoneyGram.
Q: Which express company do you use?
A: As usual we used DHL,UPS ,FEDEX Or Brinks.

Q:How can I contact with you?

A:My email

Lab Grown Rough Diamonds Details

Vs DEFG Color HPHT Rough Diamond Uncut Lab Grown Diamond For Loose Diamond 0

Contact Details
Henan Yuda Crystal Co.,Ltd

Contact Person: Ms. Pang

Send your inquiry directly to us (0 / 3000)