Lapis Lazuli Sterling Silver PendantThe deep night blue is flecked with goldyou are looking at three minerals at once. Lapis lazuli is not a single mineral but a rock: an aggregate of lazurite (the blue, a feldspathoid), white calcite, and gold pyrite inclusions. The depth of color depends on the lazurite concentration; the gold flecks are metallic pyrite. Set here in a rectangular cabochon in solid . 925 sterling silver. The finest material has come from the Sar e Sang mines in