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star-sapphire

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Buying Guides·April 18, 2026·11 min read

Star Sapphire from Sri Lanka: How the Six-Rayed Star Forms

A Sri Lankan star sapphire shows a sharp six-rayed star because microscopic rutile silk inclusions align along three crystal axes. Here is how asterism forms, what separates a great Ceylon star from an average one, and why the Star of India still sits at the top of the category.

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