These gemstones are beautiful Chalcedony. They are freeform shapes and are rose cut faceted. Chalcedony comes in many colours, and these are an opaque pale blue.
I have made a set of 3, each unique and from recycled sterling silver.
The pendants and chain have been given an antique finish.
The pendants measure approx. 3/4 inch each, and are on an 18 inch sterling chain. I can alter the chain length if needed.