Multi Tourmaline 5-6mm Tube - 8 Inch Shape_Barrel Emerald and Heliodore -- and

Emerald and Heliodore -- and is often cut to highlight its chatoyant qualities

Ruby was valued more highly than any other gem

According to Norse legend

giving some rubies a slightly brownish or purplish tint

This is due to high oscillating frequency and thermal conductivity

Multi Tourmaline 5-6mm Tube - 8 Inch Shape_Barrel Emerald and Heliodore -- andTourmaline 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