Black Onyx Amethyst Stone is a purple variety of quartz often used as an ornament. The Amethyst Stone is available in black colour in rectangular shapes and in fine polished form. The Amethyst Stone can be also worn for its astrological value to prevent drunkenness. The Black Onyx Amethyst Stone can be studded in any piece of jewellery, be it ring, necklace or earrings.
