Coconino Lapidary Club

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Largest Star Sapphire/Ruby

We usually think of star sapphires and rubies as stones in the few carat range, not in hundreds and thousands of carats. But some are an amazing size. At the […]

Star Sapphires & Rubies

The star gemstones of the corundum family are either star sapphires or rubies.  Under light these gemstones exhibit asterism [Ref 1] in showing either a six rayed or twelve rayed star.  The starred […]