Tourmaline and aquamarine are two of the most popular and visually striking gemstones in the mineral world. While they are entirely distinct mineral species with different chemical compositions, they frequently form together in the same geological environments (pegmatites), resulting in breathtaking combination specimens coveted by collectors worldwide…… Here is a comprehensive breakdown of their differences, how they form together, and their unique characteristics. From Afghanistan Weight : 14.5 grams Sizes : 27x12x10mm 24x13x10mm