Buy Certified & Natural Gemstones online @Best Price - Pmkk Gems Pmkk Gems is now selling Certified Amethyst Gemstone (Jamunia Stone) online at a wholesale price. Choose from a large selection of Amethyst Stone, including amethyst birthstones, amethyst rings, and amethyst earrings, all of which come with a lab testing certificate and free shipping in India. You can also get our premium collection like Tiger eye stone, black pearl, peridot stone, garnet stone, white coral, pukhraj, red coral and many more.