Our moss agate choker necklace is handmade with a natural moss agate tubular shaped stone that sits on our dainty 14K gold filled or sterling silver cable chain. A minimal style perfect for everyday wear. Stones are 13x4mm with tiny green fern-like inclusions with different patterns unique to each. Just let us know if you have a preference for darker or lighter stones. About Moss Agate: Moss agate is a natural untreated gemstone with tiny green fern or moss like inclusions. Moss agate is formed from volcanic rock that has been weathered over time. It can be found in Uruguay, India, Brazil, Europe, and in the US. It was 1st found in the US in Yellowstone National Park as a result of volcanic activity. Materials: Natural moss agate gemstone tube shaped 13-14mmx4mm All metal components are 925 sterling silver, 14K gold filled, or 14K rose gold filled If you have any questions just click "message seller" on our homepage. Thank you for visiting our jewelry shop, Linda and Joe .