A variety of quartz

“Beads of quartz have been found in caves in Israel that were occupied between 5,000 and 6,000 years ago.”[1]  Clearly quartz has been valued over time as a stone of worth for adornment.

There are many varieties of stone in the quartz family.  Many are commonly known as quartz: rose quartz, smoky quartz, blue quartz, milky quartz, tourmalinated quartz, rutilated quartz, strawberry quartz, amethyst, and even citrine.  However, there are still others less commonly known to be quartz.

  • Aventurine – usually a milky medium to dark green colored stone but it may be a metallic orange-brown color
  • Dumortierite quartz – a rare violet-blue to denim-blue colored stone
  • Prasiolite – a pale green stone that may be anywhere from transparent to translucent; most prasiolite is created by heating amethyst or citrine
  • Tiger’s eye/hawk’s eye – tiger’s eye has brownish yellow – golden brown/green colors while hawk’s eye has darker blue/black colors; both have the “cat’s eye” effect (chatoyancy) because of the way quartz filled in for the asbestos in the rock fibers as the stone formed

 

[1] The Jeweler’s Directory of Gemstones by Judith Crowe, p.67

Lemon citrine in Sterling Silver
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