Gem-quality Iolite AAA Rank Color: Deep Blue Size: 6x6mm, 1.18ct Ring: Silver925, 18KGP finish Silver925 stamp present. Ring size: Free size. Recommended for sizes 8-11. Iolite from Madagascar. This is a natural stone with excellent transparency, color, and cut. As this natural stone is of a quality used in jewelry at jewelry stores, you can bring it to a jewelry store as a loose stone if you get tired of the design, and enjoy it through remodeling, etc. Please handle with care as it is a very delicate piece.