Rainbow Moonstone 10mm Round Banded - 15-16 Inch birthstone_amethyst and many others

and many others

Tourmalated Quartz is clear Quartz that has formed with Black Tourmaline

It is transparent or translucent

as well as translucent and iridescent

striated crystals

Rainbow Moonstone 10mm Round Banded - 15-16 Inch birthstone_amethyst and many othersRainbow Moonstone is named for its moon like glow or chatoyancy, as well as a prismatic quality that differentiates it from other varieties of Moonstone. Moonstone is a Feldspar mineral that was used in Roman jewelry nearly 2,000 years ago. It has also been considered a sacred stone in India throughout its history, believed to have a special significance to those in romantic relationships.