These earrings are sure to delight the rock hound/fossil hunter! Made of natural "turritella agate", a stone found in Wyoming as a fossilized conglomerate of fresh-water spiral-shaped snails. Easy to put on and easy to wear; silvertone French wires are tarnish resistant and lead and nickel-free. Comes in a nice white gift box with ARThouse logo; although natural variations occur, all stones are nice and show fragments of real fossil. Also available in sterling silver.