This is an K18 opal necklace. I have used it once. This stone displays an iridescent effect of pastel colors such as blue, pink, and green on the surface and inside of the stone. ・Opal size: Approximately 5x5mm ・Chain length: Approximately 38cm ・The decorations (rabbit, paper clock motif, artificial flowers) are for photography purposes and are not included in the product. Please consider purchasing if you understand that this item has been stored at home. Thank you for looking.