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  • HPHT Lab Grown Diamond DEF Color Synthetic Diamond 4mm Round Brilliant Cut Loose Gemstone Wholesale from China
  • HPHT Lab Grown Diamond DEF Color Synthetic Diamond 4mm Round Brilliant Cut Loose Gemstone Wholesale from China
  • HPHT Lab Grown Diamond DEF Color Synthetic Diamond 4mm Round Brilliant Cut Loose Gemstone Wholesale from China
  • HPHT Lab Grown Diamond DEF Color Synthetic Diamond 4mm Round Brilliant Cut Loose Gemstone Wholesale from China

HPHT Lab Grown Diamond DEF Color Synthetic Diamond 4mm Round Brilliant Cut Loose Gemstone Wholesale from China

Category: Synthetic Diamond

Lab Grown Diamonds:  CVD Diamonds and HPHT Diamonds
Carat Weight:0.1ct ~ 6ct ; Colors: D , E , F . G , H , I , J ; Fancy Yellow ; Pink ; Blue
Clarity:VVS1 , VV2 , VS1 , VS2 , SI1 , SI2
Certificate: IGI or NGIC
Melee stones 0.80-3.00mm: Usually comes in HPHT.
0.1-6cts: CVD Diamonds and HPHT Diamonds

HPHT Lab Grown Diamond DEF Color Synthetic Diamond 4mm Round Brilliant Cut Loose Gemstone Wholesale from China Suppliers & Manufacturer



HPHT Lab Grown Diamond DEF Color 4mm Round Brilliant Cut Loose Gemstone


Lab Grown Diamond HPHT DEF White Color Synthetic Diamond 4mm Round Brilliant Cut Loose Gemstone


What's Synthetic diamond?

A synthetic diamond (also known as a laboratory-grown diamond, a cultured diamond, or a cultivated diamond) is a diamond produced by a controlled process, as contrasted with a natural diamond created by geological processes or an imitation diamond made of non-diamond material that appears similar to a diamond. Synthetic diamond is also widely known as HPHT diamond or CVD diamond, after the two common production methods (referring to the high-pressure high-temperature and chemical vapor deposition crystal formation methods, respectively). While the term synthetic may sometimes be associated by consumers with imitation products, synthetic diamonds are made of the same material as natural diamonds—pure carbon, crystallized in an isotropic 3D form.



HPHT VS CVD VS Genuine diamond comparison

When comparing CVD vs HPHT diamonds, there is absolutely no difference other than the process used to create them. You will not be able to tell the difference between HPHT vs CVD diamonds. Both methods are capable of producing the full range and quality of real diamonds that are optically, chemically, and physically identical to earth-grown diamonds.
We could dive deep into the technicalities of each method, detailing all the difference in the production process, but we believe it’s a waste of time at best and confuses and misleads people at worst. Instead, we prefer to provide you with practical and easy to follow reliable advice. As you are aware, each and every one of our lab-grown diamonds are industry certified by leading certifiers, therefore when choosing your diamond, solely focus on trying and go for as high of colour and size as your budget allows it. Additionally, when it comes to clarity, try to go for SI1 and above, with the exception of emerald cuts, where we recommend going for VS2 and above. By following those two simple guidelines we guarantee you will be happy with your choice, regardless of whether the production method was CVD or HTPT, since, as we’ve already discussed, it will make absolutely no difference to you.

Real facts:
CVD and HPHT can produce D colours
HPHT on average yields higher colours than CVD
CVD on average yields higher clarities than HPHT
HPHT and CVD can produce VVS1 and FL
Most diamonds under 1:00ct are HPHT due to costs effectiveness

Included with your purchase from FU RONG GEMS

100% Made in China:
All of the Lab Created Diamond/CVD Diamond/Synthetic Diamond gemstones are made in the China.
30 Day Returns:
We want and expect you to be thrilled with your purchase, but to provide you peace of mind, we offer a 30 day return policy for most of our Gemstones.

We supply Lab grown diamond stones in many kind of popular shapes,  round, heart, marquise,oval, emerald, asscher..etc. and also in several popular colors: such as Pink, Yellow, Blue, black..etc.  wholesale at factory direct price from China Supplier and manufacturers.


Popular Shape cuts of diamond stones.

To choose the ones you want, please click the following MM SIZES & SHAPE CHART:

Lab diamond gemstones popular shapes and size chart

FAQ of Lab Diamond Stones:

1.Q:Are lab diamonds real diamonds? 

A: Although there is some confusion on whether natural diamonds are the same as lab grown diamonds, we're here to inform you that lab diamonds are in fact real diamonds. ... This remarkable lab grown diamond (also known as a synthetic diamond) has the same sparkle, clarity, and aesthetic of an earth mined diamond.
2.Q:Why are lab diamonds so expensive?
A:Synthetic diamond prices are generally lower than natural diamonds, and the price of lab-created diamonds continues to drop (as much as 30% in a year). This is due to lab-grown diamonds not having any resale value and that the demand for lab-grown diamonds continues to decrease.
3.Q:Are lab grown diamonds better?
A:Lab-grown diamonds are real and they're fantastic. They're also ethically-sourced, eco-friendly, and far more affordable than their mined counterparts. For proof, look no further than Clean Origin, one of the best names in the game when it comes to lab-grown diamond engagement rings.
4.Do Lab created diamonds get cloudy?
A:Lab-made diamonds typically have good clarity. Like a high-quality natural diamond, lab-made diamonds won't get cloudy.
5.Q: Can you tell the difference between lab grown and mined diamonds?
A: There is no visible difference between the two. Even a professional gemologist will need specialized equipment to tell which is which. With magnification, a professional will be able to make out small contrasts in the inclusions of lab-grown vs. mined diamonds.
6.Q: What's the highest quality Lab diamond?
A: FL (or Flawless) is the highest grade for clarity. An FL diamond has no imperfections even when magnified 10x by a professional. For color, D or completely colorless diamond is the highest grade. While flawless and colorless diamonds are extremely rare, cut determines a diamond's true value.
7.Q: Are lab created diamonds worth anything?
A: Lab-created diamonds have very little to no resale value. That means if you buy a lab-created diamond, you won't be able to reap any part of what you paid for it. For example, if you bought this 1.20ct lab-created diamond, you'd have a beautiful stone, yet no jeweler will buy it back.

For Other questions, please feel free to contact us for help.  Email:


  • Factory & Manufacturer since 2008, strong productive ability.
  • Ensure the large quantity supply of product.
  • We are one of the largest manufacturers & Suppliers of Loose gemstone in Wuzhou City.
  • Strict quality inspection:
  • 15 production processes ; 9 inspection processes ; more than 8 experienced QC check ;
  • Every gemstone has its quality assurance.


  • 30 days without using and damage of the stones;
  • Bulk product quality is not same as samples;
  • Gemstones are not same as the order list;

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