THE BEAUTY OF A STAR SAPPHIRE IS EVIDENT IN THIS BREATHTAKING 24.45 CT STONE. STAR SAPPHIRES EXHIBIT A SPECIAL OPTICAL PHENOMENON CALLED ASTERISM. TINY NEEDLES OF SILK WITHIN THE SAPPHIRE CRYSTAL RELECT LIGHT AND FORM A STAR SAPPHIRE'S TELLTALE STAR. THIS STONE IS SET IN A PLATINUM MOUNTING WITH .38 CT TW OF ROUND DIAMONDS SET AT THE BOTTOM OF THE STONE. THIS STAR SAPPHIRE IS 1/2 INCH HIGH AND 1/2 INCH WIDE.