Multi Tourmaline 4mm Banded Blue/Green Microfaceted Round - 15-16 Inch 4-22mm also known as Nacre

also known as Nacre

Rhyolite or Tuff

Blue Green Quartz

this color forms black

It has been greatly sought after throughout history and was at times valued as highly as Diamond

Multi Tourmaline 4mm Banded Blue/Green Microfaceted Round - 15-16 Inch 4-22mm also known as NacreTourmaline is classified as a semiprecious stone and occurs in a vast array of colors, everything from colorless to black, from pastel to bright to dark. It can even exhibit various colors within the same specimen. Its name derives from the Sinhalese word turamali, which translates to stone of many colors. Due to this variety of colors, Tourmaline has often been confused with other stones. Many stones in the Russian crown jewels from the 17th century