Opal Var. Hyalite – Valec, Doupov, Karlovy Vary, Czech Republic
 Found in 1999
 Sculpturally structured hyalite on a matrix. This mineral usually occurs as a crust; only rarely do the spherical crystals build up like this one, forming an extremely aesthetic structure.
 This variation of opal is highly fluorescent. A rare, substantial-sized collector's piece from the Czech Republic with good luster.