This beautiful Tsavorite-green gem is a cut from a lab-grown garnet. Did you know that most lab-grown or synthetic crystals are grown for scientific reasons, not for us jewellers? That is because synthetic crystals are more perfect than those nature usually produces. In the earth multiple small crystals often start out close together, and end up growing into and through one another, creating twinning planes and changes in the lattice orientation. (And that is before we even start talking about inclusions.) For scientific applications, this makes nearly every natural crystal a tragic case of perfect potential but inadequate execution. Enter the lab-grown crystal.
This particular garnet is CTH:YAG (Chromium, Thulium, Holmium: Yttrium Aluminum Garnet). It is most often used in medical lasers and was produced using the Czochralski method, which is one of the only ways to create crystals pure enough to use in lasers. As far as gems go, it has an excellent RI of 1.8, and hardness of 8.5 on the Mohs scale.
That means CTH:YAG has stunning color, amazing sparkle and is a wise and durable choice for jewelry. Not to mention that cut in Coville’s design “Sixty One", it is a straight up sparkle-bomb of gorgeousness. And did I mention that it is green?!
Total Weight in Carats: 5.91
Dimensions: 10.3 mm (12.1 at the corners) x 6 mm
Reg #: SG 07-14-10-0337-0401
Cut design: A modified version of “Sixty-One” by Charles Coville
Cut By: Kristina Leach
