A towering presence. Sculpted from an onyx, a tourmaline and a prasiolite, this ring does all the work to make you stand out. Each Lore Van Keer piece is designed and hand-crafted in their atelier in Belgium. Material: Silver Stone: Tourmaline, Amethyst & Onyx Stone Colour: Green & Black Number of Stones: 3 Stone Shape: Oval, Round Available sizes: 52,54,56,58 Does it come with certificate? No Can the piece be engraved? No