Beautifully faceted, each of these Purple Amethysts [February birthstone] measures 6mm, is in a round cut, and together they have a total carat weight of [approximately] 1.30ctw. They are prong-set in 925 Sterling Silver, back-set bezel stud earring castings. Because the gemstones are placed against the bezel [frame] and held in place by prongs against their pavilions [backs], it is virtually impossible to lose the gemstone. Perfect for young ladies of any age! Although they are not shown, the 925 Sterling Silver earring backs are included. Your Purple Amethyst Earrings will arrive gift-boxed, and shipping insurance is included in the shipping costs.