This is a necklace made with resin. Shell and gold leaf are sealed inside, creating various expressions depending on how the light hits it. A gold chain is included (stainless steel chain). As a handmade item, you can enjoy the unique texture of this one-of-a-kind piece. Size: Approximately 3cm in diameter, chain length approximately 45cm. Other: There may be air bubbles, distortions, and slight color differences from the photos. We appreciate your understanding and look forward to your purchase. Thank you.