PhenacitePhenaciteRussiaThe name phenacite, or the alternate spelling, phenakite, is derived from a Greek word meaning "deceiver", referring to its similarity in appearance to quartz. Phenacite is a rare beryllium mineral, which is found in association with other precious gemstones. It is found in pegmatitic pockets and is associated with gemstones such as topaz, beryl, emerald, chrysoberyl, and smoky quartz. At a hardness of 7.5-8, is suitable for mounting in jewelry. The present offering is a square cushion radiant-cut phenacite with colorless hue displaying excellent luster and clarity. Weighing approximately 12.54 carats and measuring 13.57 x 13.50 x 10.54mm None