Multi Tourmaline 4mm Cube Table Cut Bead - 15-16 Inch Matara Diamond this opal variety is characterized

this opal variety is characterized by their dark base tone

Emerald is one of the four “precious” gemstones

from deep oranges to creamy off-white tones

These form as a criss cross banding called lamellae

Multi Tourmaline 4mm Cube Table Cut Bead - 15-16 Inch Matara Diamond this opal variety is characterizedTourmaline 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