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| ZT Lab grown synthetic loose diamond HPHT 0.01 to 5 carat DEFGH VVS to SI clarity 3EX FACTORY sent directly | |
| Brand | ZTSUPERHARD |
| Original | Henan, China |
| Shape | Round Brilliant |
| Weight | 0.01-3.00 carats |
| Color | DEFG white color |
| Clarity | VVS, VS, SI |
| Size | 1.40-9.36 carats |
| Usage | Jewelry, wedding ring |
| Sample Order | 1 carat |
| Type | 3ex lab created diamonds,1 carat loose diamonds,6.5mm lab diamonds |
lab grown 1 carat loose diamonds are made using one of two techniques. Each process produces pure carbon diamonds when complete, however they are often used for different application. High Pressure High Temperature (HPHT) is our primary growing process, while Chemical Vapor Deposition (CVD) is commonly used to produce diamonds for industrial purposes.

Lab created diamonds are created through non- polluting technologywithout negatively harming native communities, society or the earth. They are an Eco-Friendly product.


It is cultivated by simulating the natural diamond growth environment, moving the natural diamond formation environment to the laboratory, and using high technology to make the diamond grow in the laboratory. Small diamond seeds are gradually grown with gravel-sized or flaky diamonds as seeds, and further grown into large rough diamond stone,finally polished into the shinning diamond as natural one.

| Lab grown diamond | Natural Diamond | |
| Whether is it real or not? | 100% | 100% |
| Is it eco-friendly? | 100% | Not at all |
| Where does it come from? | Produced by Laboratory | Founded in the mines |
| Can you customize it? | Yes | Maybe |
| Is child labor involved? | No | Maybe |
How long does it live? | Forever | Forever |
| Will the diamond's shine go away? | No | No |
| Which is more affordable? | Very cost effective | Expensive |
| Can the same quality be delivered in large quantity? | Yes, because it is manufactured in controlled conditions. | Can not be determined |
By chooseing a 6.5mm lab diamonds, best lab grown hpht cvd diamond versus an earth mined diamond you are reducing the harmful impact mining has on the environment and also give you the joy of owning a beautiful lustrous diamond.

Henan Zhongtu Superhard Material Co., Ltd. is located in Zhengzhou City, Henan Province, China. After 15 years of development and efforts, the company has developed into a large national enterprise integrating scientific research, production and international trading.
Zhongtu company has state-level enterprise technology center, enterprise post-doctoral research station, and has a number of core key technologies and independent intellectual property rights. Some of the products have reached the international advanced level and are national high-tech enterprises. The main products of Lab grown diamond series products are popular in Japan, the United States, Europe and other developed countries and Southeast Asian markets.

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