inclusions

Chatoyant or “cat’s eye” chrysoberyl gems are also known as cymophanes. Fine silk inclusions (very fine threads of crystals) make its cat’s…

Lapis lazuli with fine pyrite inclusions. Photo by Hi-Res Images of Chemical Elements. Licensed under CC By 3.0.

Stamp seal from Assyria or Mesopotamia, Neo-Assyrian (style), late 8th-7th century BCE. Lapis lazuli with calcite inclusions, from the Los Angeles…

4.6-ct demantoid with horsetail inclusions. © Ildar Latypov Minerals. Used with permission.

Despite their name, “Herkimer diamonds” are actually doubly-terminated colorless quartz crystals found in Herkimer, NY. The…

This 79.80-ct indicolite has inclusions that make it appear like the wind-blown sea. © Ben Day Jewelers. Used with permission.

Dendritic quartz (with tree-like inclusions), citrine, and brown diamond necklace in 18k and 22k gold and oxidized silver. Photo by Alan Jackson.…

This quartz crystal has excellent transparency and black schorl tourmaline inclusions. © Rob Lavinsky, www.iRocks.com. Used with permission.…

Bright gold-colored rutile inclusions make these earrings unique. INSPIRO Delicate Dangle Earrings with Rutilated Quartz. © Martha Seely.…