agete Water Opal and Crystal Reversible Charm I chose and purchased one with very vivid play-of-color. It's a reversible design, allowing you to enjoy different textures. The sparkling cut surface is very glamorous and beautiful. Material: K10 Yellow Gold Accessories: Brand box, sales certificate (as shown in the last image) Total length: Approximately 1.5 cm Charm size: Approximately 0.9 cm x Approximately 0.7 cm K10 Although it's a beautiful item, please understand that it is a used item.