White Mother of Pearl / MOP 25-27mm square hoop beads (ETB00274) Black Zebra Agate A rare material sometimes referred

A rare material sometimes referred to as Christmas Stone because of the green and red coloring

Citrine (pron

Its color is normally apple-green

brownish yellow or orange

Psilomelane

White Mother of Pearl / MOP 25-27mm square hoop beads (ETB00274) Black Zebra Agate A rare material sometimes referredMother of pearl, is an organic inorganic composite material produced by some molluscs as an inner shell layer; it is also what makes up the outer coating of pearls. It is strong, resilient, and iridescent. Mother of Pearl is found in some of the more ancient lineages of bivalves, gastropods, and cephalopods. However, the inner layer in the great majority of mollusc shells is porcellaneous, not nacreous, and this usually results in a non iridescent