Understanding the differences between earth mined diamonds and cultured diamonds
Diamonds have universal appeal and have incredible properties. They have exceptional hardness, durability, brilliance, fire and scintillation. These key features distinguishes them from other gems. Over the decades manufacturers have developed techniques to recreate the synthetic “diamond look” at affordable prices which ultimately lead to the recent development of cultured diamonds. Over the last 60 years GIA has closely monitored the movement along side principle research on endless natural diamonds in the ten’s of millions. With the extensive experience and scientific research, GIA are able to accurately identify natural diamonds to cultured diamonds. GIA currently does not issue certification for cultured diamonds. Typically cultured diamonds will be certified by International Gemological Institute (IGI).
With buyers protection at the forefront of our business, it is imperative that the differences are explained so each buyer can make an informed decision. Some might favour cultured diamonds for their own reasons while others prefer to choose naturally mined diamonds.
According to GIA’s studies, there are several differences between naturally mined and cultured diamonds. Diamonds are created or formed only in the precise moment when atoms collide under extreme pressures and temperatures. Natural diamonds formed within the upper mantle of the earths crust. Typically sitting 160 kilometre under ground for millions of years.
Cultured diamonds are grown in strict laboratory conditions that memic the upper mantle conditions. They do in-fact exhibit the same chemical composition, crystal structure and optical properties. To determine the difference is complex but not difficult. Due to the artificial growing environments some visual characteristics under magnification include colour zoning, metallic imperfections, weak strain patterns and internal graining distinguishes the differences.
More information can be found on GIA’s peer reviewed articles: Gem & Gemmology