Lab-grown diamonds are generally produced by chemical vapor deposition (CVD) or high pressure high temperature (HPHT) methods.
CVD uses ultra-pure carbon-rich gases in a controlled environment. It produces Type IIa diamonds, which are quite rare in nature and account for less than two percent of all mined diamonds. Type IIa diamonds have no, or almost no, impurities; they are the purest, highest-quality diamonds.
HPHT, used since the 1950s, puts a pure, solid carbon source under high pressure and high temperature. In the presence of a catalyst, the pressurized and heated carbon crystalizes into diamond. HPHT is sometimes used to improve the color of mined or lab-grown diamonds.
Our proprietary CVD process allows us to produce stunning diamonds in color and size combinations that are seldom found in mines, such as fancy color pink diamonds that are prized for fine jewelry.

Cutting

The cut of the Lab-diamond is a measure of the quality of the shape, geometry, and finish of diamond gemstone. Only round brilliant diamonds receive formal cut grades on a scale from ldeal (the best) to Poor. Starsgem in uncompromising on cut quality to ensure all of our diamonds have optimal brightness, fire scinillation, andmaximum light performance.

Clarity

Clarity is a measurement of how many blemishes or inclusions are present in the Lab-diamond, which can be eitherdefects in the diamond crystal or microscopic foreign particles within the diamond. The lower the darity of a diamond, the more imperfections in the diamond. Clarity is graded on a range from Internally Rawless to Induded

Color

A perfect diamond, with no impurities and no defects, is completely colorless. Impurities such as nitrogen causeundesirable yellow or brown tones in the diamond Color is graded on a range of letters from D to Z

Carat

The carat weight of a Lab-diamond is a measurement of its weight One carat is exactly one- fifth of a gram (0.20 g).When a diamond is properly cut the carat weight defines the size of the diamond, and larger diamonds tend to be more expensive.

Advantages

Six advantages of Lab-Diamond

1. Superior Quality & Purity

2. Known Origin of Every Diamond

3. Environmental Superiority

4. Larger, Better Diamonds for Your Budget

5.Positive Externalities

6.  Affordable Fancy Colored Diamonds

Company information:

STARSGEM is a professional gemstone manufacturer, which is located in wuzhou, Guangxi ,China. We have 10 years production experiences to be a leading manufacturer in this industry ,which specializes in manufacturing and selling Moissanites ,Synthetic Gemstones and Natural gemstone, such as Cubic Zirconia ,Ruby ,Sapphire, Spinel ,Glass ,Crystal, Citrine ,Amethyst ,Blue Topaz, Emerald ,Garnet ,Peridot ,Onyx ect.

STARSGEM owns a professional QC department, which is strict in checking gemstones quality to guarantee each stones perfect.  We successfully produced perfect moissanites and Lab-grown Diamonds,which achieve 3EX cutting level: Excellent Polishing; Excellent Symmetry;Excellent Cutting.

Packing & Delivery

Notice:

Please note that some countries will charge addition fees at local customs. Most countries will only charge VAT based on the declared value of the package to be paid upon delivery( most European countries) or import duties( Canada, Australia).

These charges should be buyer's responsibility as they are not additional shipping or insurance charges.

We are always trying to help you to reduce any GST or VAT or other import taxes.

But we can not promise no tax charges because it depands on policy of customs.

Please contact us if any questions or you can check with your local customs office.

FAQ

Q1:Can i order a sample to check the quality first?

Yes,sample is ok,the MOQ is 1pc.

Q2: Can i customize special size?
Yes, we can according to your requirement to customize.

Q3:If i am not satisfied with the quality,can i return back?
Yes, if the stone with quality problems,you can return back ,and change another one for you.

Q4:Can I get discount ?
Yes, i will try my best apply best price for you.

Q5:How long could I get my order ?
1 day send out if in stock.
3-4 days if out of stock .

Contact information: