Petro Tourmaline 7x9mm Nugget - 13-14 Inch Agatized Wood White Howlite is named for

White Howlite is named for Canadian mineralogist Henry How

Tiger Eye has been revered and feared throughout history as an all-seeing

" a type of reversible photochromism

The most highly regarded colors are the reds and pinks

with a chemical composition of sodium aluminum oxide

Petro Tourmaline 7x9mm Nugget - 13-14 Inch Agatized Wood White Howlite is named 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