Multi Tourmaline 6x12mm Chip Bead - 15-16 Inch FBLIVE It is a particularly unusual

It is a particularly unusual gem because it exhibits a special optical property known as tenebrescence

Topaz occurs in a wide range of natural colors

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Trolleite is known for its greasy appearance and subdued shine

Multi Tourmaline 6x12mm Chip Bead - 15-16 Inch FBLIVE It is a particularly unusualTourmaline 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