Abalone Shell 8mm Star Cut Faceted Coin Bead - 15-16 Inch Pastel Rainbow (Dyed) Black Spinel not only has

Black Spinel not only has the dark color

and even pink

Jade refers to an ornamental mineral

Kingman turquoise

also known as Nacre

Abalone Shell 8mm Star Cut Faceted Coin Bead - 15-16 Inch Pastel Rainbow (Dyed) Black Spinel not only hasAbalone Shell is strong and is made of stacked calcium carbonate tiles. When the abalone shell is struck, the tiles slide instead of shattering absorbing the energy of the blow. The inner layer of the shell is composed of nacre (mother of pearl), which in many species is highly iridescent, which make the shells attractive as decorative objects, jewelry, and as a source of colorful mother of pearl.