Materials: Sterling silver 925 Center: Black opal Sides: Boulder opal Leaf-like opal at the top: Precious opal. All natural stones. It also has an iridescence effect, like sunlight filtering through the trees in a forest. Metal: Silver 925 Weight: 17g Enjoy this playful, large pendant top with Art Nouveau-like curves. The swaying gold pearl is a freshwater pearl. It will add a touch of elegance to your autumn sweaters and coats, and I believe it will help spark interesting conversations at gatherings. Authentic & cool design & a sculptor who is not just anyone! Thank you for viewing. Discounts are negotiable if you leave a comment. Stamped with the atelier mark "之". It's been about 5 years since this was made, but it hasn't turned black because it's high-quality silver. With proper storage and occasional care, silver will shine forever. The subdued luster is unique to silver. A silver polishing cloth is also included just in case.