This product is a stunning 1.91ct natural metallic gray spinel loose gemstone, sourced from Burma. The gemstone is cut to a cushion shape with a good cut grade and VS clarity grade. It is 100% natural with no treatments, and comes with the certification as per your request. The gemstone is branded as "NATURAL GEMSTONE" and has its origin in Thailand. It is a unique and high-quality gemstone perfect for jewelry making or collecting.