Gemstone & Jewelry Blog by Dragon Dreams Jewelry, LLC

March 1, 2015

Stars in stones – asterism

Filed under: General Information — Tags: , , , , , , , , , , — dragondreamsjewelry @ 5:50 pm

Asterism is a term which describes “the effect of light rays forming a star (Latin aster, star)…It is usually created through reflection of light by thin fibrous or needle-like inclusions that lie in various directions.” [1]

Stars in gemstones may have four, six, or (less frequently) twelve rays.  With these stones, the angle of the stone to a light source is important to be able to see the star.  Natural gemstones known to exhibit asterism include:

Star ruby with six-rayed star

Star ruby with six-rayed star. One of the lovely stones in our collection at Dragon Dreams Jewelry, LLC.

  • star sapphire
  • star ruby
  • star diopside
  • star rose quartz
  • star blue quartz
  • star garnet
  • star spinel

[1]  Gemstones of the World: Newly Revised & Expanded Fourth Edition by Walter Schumann, p.52

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