G107LAPIS SILVER CABOCHON CUT 10 X 8 mm OVAL LAPIS LAZULI GENTS RING SIZE V
Lapis is normally a mixture of 3 minerals; lazurite, calcite and pyrite. Lazurite, a complex mineral containing sulfur, is the essential ingredient of lapis that gives it its vivid blue colour.
In the gemstone world, a cabochon is a stone that is cut with a highly polished, rounded or convex top with no faceting and a flat or slightly domed base. A cabochon may be cut in any shape, though oval is by far the most common. The term comes from the French caboche, meaning knob or small dome.