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.
Specification
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.
FAQ
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 address:lydia@yudacrystal.com/whatsapp+8618595922359
Lab Grown Rough Diamonds Details
![](http://img.everychina.com/nimg/73/1b/fe1886a0ba370c89d3264799fc91.jpg)