How are Pure Grown Diamonds made? Pure Grown Diamonds are produced by utilizing two gem-quality diamond creation processes: High Pressure-High Temperature (HPHT) and Chemical Vapor Deposition (CVD). In both processes, a small diamond seed is placed in an environment that contains carbon. Under suitably controlled conditions, the diamond grows, atom-by-atom, layer-by-layer, recreating nature’s process.
If grown diamonds are the same as mined, why are the terms "Lab-Grown" and "laboratory-created" used?
Pure Grown Diamonds wants to be absolutely certain that it distinguishes grown diamonds from mined diamonds. The terms "Laboratory-created", "lab-grown" and "Lab-Grown" diamonds all appropriately describe Pure Grown Diamonds.
Is the process patented?Yes.
How big are the diamonds sold on PureGrownDiamonds.com?
Pure Grown Diamonds are currently offered in the following colors/sizes:
Colorless .25 to 3.00cts. Fancy yellow .25 to over 4.00cts. Fancy pink .25 to over 1.00cts. Are your diamonds graded? Yes. Pure Grown Diamonds are graded to the same standards as mined diamonds by leading independent gemological institutes.
How do Pure Grown Diamonds and mined diamonds compare? Both have the same physical, chemical and optical properties and emerge as rough diamonds. Both have the same hardness, specific gravity, refractive index and dispersion; are polished using the same equipment and techniques; and have the same brilliance, sparkle, fire and scintillation. Both are, in fact, diamonds.
What is the appraisal process? All of our diamonds over .25cts come with a grading certificate. If an appraisal is needed, it is important that you take your diamond and/or jewelry to an experienced and accredited gem and jewelry appraiser. One example is the International Gemological Institute (IGI), where all IGI appraisers are accredited members of the American Society of Appraisers (ASA).
How do grown diamonds and diamond-like materials compare? They don't. Cubic zirconium (CZ), moissanite, and diamond-coated materials are not diamonds. These are called "simulants" in the jewelry industry. These materials have completely different chemical and physical properties than diamonds.
What quality are the diamonds you offer? The cut, color and clarity of both our colorless and fancy color diamonds are consistent with very high quality mined diamonds. In fact, all colorless Pure Grown Diamonds are type lla, which is the purest type found in nature and accounts for only 2 percent of the global production of mined diamonds.