Blue star sapphire is a rare form of sapphire that, when cut into a cabochon form, bends light into a star. Its color can vary from a creamy blue to a strong blue. It has a hardness rating of 9 out of 10 making it a great and durable option for the daily wear of your class ring.
USNA Class Ring Mod with Blue Star Sapphire Centerpiece and Diamond Dividers