Pure Er:YAG Rough, Erbium Color-Change Garnet chain 5 and no durability issues

5 and no durability issues

I've made a lot of upgrades

It cuts and polishes well with diamond

I cut this as a special gem at our Open Sauce booth--an extra large stone that resembles a Minecraft emerald

Pure Er:YAG Rough, Erbium Color-Change Garnet chain 5 and no durability issuesThese are facet rough of erbium doped YAG, a lab grown garnet used in lasers for both medicine and industry. Erbium YAG has a very obvious color change between different light sources. Under sunlight and cool LEDs it's a nice orange, but it shifts easily, changing color between Cool LEDs (orange), Warm LEDs (yellow), CFL (strawberry pink), and OLED (magenta) as well as under fluorescent lighting and OLED illumination. Sunlight shows an orangeish pink.