from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A sapphire with a polished convex surface exhibiting asterism.

from The Century Dictionary.

  • noun Same as asteriated sapphire (see sapphire) and asteria.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a sapphire that when cut shows a starlike figure in reflected light because of its crystalline structure


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