Like the package in the picture says.. these are made by Preciosa in Czech Republic. They are a fused and foiled glass. They are remarkably pretty. As I look at this one I see rust, fire opal, purple, silver, and gold They are newly made.They are 40mm x 30mm and about 1/3 inch high. They are the same colors as the 40mmx30mm oval that is shown in a separate listing. You will receive one cabochon. If you would like more, let me know and I will create a reserved listing for you.