Multi Tourmaline 4mm Banded Blue/Green Microfaceted Round - 15-16 Inch 24x60mm an opaque silicon dioxide mineral

an opaque silicon dioxide mineral and form of microcrystalline Chalcedony

Shattuckite is a rare copper silicate hydroxide mineral

King Tutankhamun’s death mask was studded with Turquoise

and features dark manganese dendrites throughout

Multi Tourmaline 4mm Banded Blue/Green Microfaceted Round - 15-16 Inch 24x60mm an opaque silicon dioxide mineralTourmaline 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