Sea Biscuit cut base Opalite is a man-made from

Opalite is a man-made from glass and natural additives such as dolomite

Adularescence is the name of an optical effect

technically a spherulitic chalcedony

Vasonite is typically green but also can be found as green

Sea Biscuit cut base Opalite is a man-made fromA sea biscuit is a type of sand dollar that is an marine animal of the order Clypeastroida (class Echinoidea, phylum Echinodermata). They are close relatives of sea urchins and heart urchins. Sea biscuits are less flattened and more rounded than a sand dollar. You will receive the exact item pictured. Dimensions: 2. 25 L x 1. 75 W x 1 H inches Weight: 0. 14 pounds