. Kalyan Gems Panchadhatu Natural Onyx Stone Pendent for Unisex 3.25 Ct to 12.25 Ct Certified Green Hakik Gemstone Pendent Adjustable. .Natural Certified akik Stone Original loose gemstone Certificate of Authenticity is Included AAA+ Quality . Natural And Original Onyx Stone Gemstone . 100% pure & green Color Gemstone Quality Grade : STANDARD EXCLUSIVE.