What is a Certified Lab Diamond?
A certified lab diamond has undergone an evaluation by a recognized gemological laboratory. This certification grades the diamond’s quality and verifies authenticity, detailing its 4Cs and any unique characteristics, so that buyers have accurate information about their purchase.
Are Lab Grown Diamonds GIA Certified?
Just like natural diamonds, lab grown diamonds can be certified by the Gemological Institute of America (GIA). These reports include evaluations of the diamond’s 4Cs — cut, color, clarity, and carat weight.
GIA lab grown diamond reports are slightly different from natural diamond certifications. They specify that the diamond is laboratory-grown and may describe its manufacturing processes, such as HPHT (High-Pressure High-Temperature) or CVD (Chemical Vapor Deposition).
Are Lab Grown Diamonds IGI Certified?
The International Gemological Institute (IGI) provides comprehensive grading reports for lab grown diamonds that assess the same 4Cs as GIA.
Lab Grown Diamond Certification FAQ
Are all lab grown diamonds certified?
No, not all lab grown diamonds are certified. This is especially true for melee (very small diamonds used as accent stones). While certification provides valuable information, it is not mandatory.
What is the best certification for lab grown diamonds?
The best certification for lab grown diamonds depends on individual priorities. Both GIA and IGI certifications are widely accepted and trusted.
How do you authenticate lab grown diamonds?
Lab grown diamonds are authenticated through certification and advanced testing techniques. Gemological laboratories like GIA and IGI use specialized equipment to analyze the diamond's physical, chemical, and optical properties. They also identify growth patterns, and any treatments applied during manufacturing. Certification reports from these laboratories confirm the diamond's authenticity and quality.
