Material: natural untreated andradite, variation demantoid garnet. Size: 10.5 x 9.5 x 6.2 mm calibrated size: no the word calibrated means that size of this gem was optimized to fit most inexpensive mass produced jewelry setting. Any non-calibrated gem can also be set into jewelry.Ask your local jeweler for details. For customers who are not familiar with metric system: 1 inch is 25.4 millimeters.
Clarity: eye clean with textbook perfect horsetail inclusion. Clarity scale: from best and cleanest with no visible inclusions (flawless) to heavily included (p3): flawless - vvs1 - vvs2 - vs1 - vs2 - si1 - si2 - p1 - p2 - p3.We don't apply radiation, oiling, diffusion and/or heat treatment in order to make low grade material look more expensive we offer 100% natural gems only, no exceptions. This item is made of demantoid.