Apache tear

Local name for spherical obsidian, usually embedded in gray perlite, mainly from Arizona, United States. The spheres of black-gray translucent obsidian occur as cores in…

Aphrodite stone

Commercial fantasy name for cobalt-bearing calcite (also called cobalto-calcite), named after the Greek goddess Aphrodite, the goddess of love, beauty, sexuality and fertility, among other…

Aquaprase

Commercial name for ocean blue-green-colored chalcedony. The name in reference to an aqua blue chrysporase, also a chalcedony variety. Could also, according to a discussion…