specular stone

Noun

 * 1)  A type of transparent stone (lapides speculares) that was used in classical times for glazing, adding sparkle to floor coverings, etc. Various modern authors have identified this stone as selenite, talc, or mica.
 * 2) Any transparent or translucent stone.
 * 1) Any transparent or translucent stone.
 * 1) Any transparent or translucent stone.
 * 1) Any transparent or translucent stone.
 * 1) Any transparent or translucent stone.
 * 1) Any transparent or translucent stone.