Pearl Tile Inlay Horn Necklace with Gold Plating and Chain - 1 Piece Uniqueness Guaranteed: Every item is one-of-a-kind, making them ideal for all projects or designs. Avg Size Range: (2.25 Inches Long, Chain 36 Inches) Size Vary Slightly Pearls are formed when aragonite, or a mix of aragonite and calcite, deposits in the soft tissues of mollusks or other shelled marine animals in concentric layers. The animal then encloses these deposits in an iridescent coating of nacre. While the most valuable pearls are found in the wild, most that are currently sold come from specially farmed pearl oysters or mussels. Handmade items vary in size, shape, and color when selected randomly (the highest quality items are chosen first). They'll be as beautiful as those in the photos.