Corundum, also affectionately referred to as sapphire, is a rock-forming mineral composed of aluminum oxide, and is mined from alluvial deposits. It’s gorgeous on its own natural and unpolished, so there’s no wonder that we have found ways to cut and shape it to our liking.

All of these specimens can be seen in the Grainger Hall of Gems.

  • Sapphire crystal on matrix, from Madagascar
  • Natural sapphire crystal from Kashmir, India
  • Faceted sapphires from Sri Lanka
  • Edwardian carved sapphire and diamonds set in platinum pendant - 60.2-carat sapphire