Here is a magenta oval cut.
Utah Tiffany Stone Bertrandite Cabochon 11.5×7.2×4.7mm 2.9cts Beryllium Fluorite
Utah Tiffany Stone Bertrandite Freefrom Cabochon. “beryllium, along with other minerals likefluorite ,opal ,calcite ,chalcedony. “beryllium sorosilicate hydroxide” wiki. mostly found at the Brush Wellman beryllium mine in the SporMountain area of western Utah”.