genuine blue star sapphire sterling silver 925 ring with diamonds/oval-shaped tsnjewelry handmade genuine blue star sapphire sterling silver 925 ring ensconces an earth-mined star sapphire gemstone between diamonds. the oval-shaped star sapphire displays a 6-ray floating star (observed only when exposed to direct sunlight). both the star sapphire cabochon and the synthetic white diamond accents are set in a solid sterling silver ring setting. the vintage-inspired ring arrives securely packaged in a free gift box.