Optical Sapphire Discs, Cores and Wafers Size:2850g Giant Sapphire Core 4.5in/115mm diameter 69mm thick Depending on the exact size

Depending on the exact size of the zone the eye will be bigger or smaller

making Sphalerite firmly a collector's stone

This is a minimalist black leather cord with a sterling silver clasp

The 99g piece has a light brown color and measures about 45

This is a simple style of long hexagon tablet cut reminiscent of all kinds of gems and crystals in old video games (thanks in part to the restrictions of pixel art)--in spite of its simplicity this design makes for a lively gem with a very satisfying look

Optical Sapphire Discs, Cores and Wafers Size:2850g Giant Sapphire Core 4.5in/115mm diameter 69mm thick Depending on the exact sizeThese are cores and wafers of colorless optical sapphire grown by Rubicon, one of the top US growers of sapphire, and purchased from a factory closing auction. These are a mixture of rejected material (likely for surface chips or maybe minor optical misalignments) and cores wafers that just didn't get used before the factory closed. These were grown for use in high end optics and as a substrate to grow bespoke computer chips on. These can of course be