Mother of Pearl 15mm A Grade Coin Cabochon Stone Type_Trolleite Viking explorers used thin pieces

Viking explorers used thin pieces of Iolite as the world’s first polarizing lens to help them determine the exact location of the sun for navigation

have been used for yellowish gemstones for at least two thousand years

This item is treated and dyed agate

place natural

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

Mother of Pearl 15mm A Grade Coin Cabochon Stone Type_Trolleite Viking explorers used thin piecesMother of Pearl, also known as Nacre, is an iridescent composite of organic and inorganic material most known for being the coating of pearls. It is produced by certain molluscs as an inner shell layer, and forms around pieces of sand or other irritations within such a molluscs shell to create pearls. Mother of Pearl is white with an iridescent sheen. Sold individually. These cabochons are all unique and vary in colors and patterns. The image shown