Plum Tourmaline 10mm Round - 15-16 Inch july_carnelian Agate has been prized for

Agate has been prized for its beauty throughout history

Turquoise is one of the oldest known gemstones

an elusive stone with unique coloring

but occasionally gabbro comes in oranges and greens

Plum Tourmaline 10mm Round - 15-16 Inch july_carnelian Agate has been prized forTourmaline 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