Amber Tumbled Stone Amber is a stone of ancient forests and prehistoric times. Amber is a warm gemstone and known to help relieve pain and to boost the immune system. It has a lovely energy. This amber tumbled stone collection can be used in many ways. Baltic amber. 40 to 90 million years old 10 + 2 FREE. 12 for the price of 10. Average Weight 4g to 5g each Average Size per piece: 35mm X 24mm each is unique Individually numbered Certificate with each order. Each gem is unique. Photo is an example. We will match as best we can. Your selection will vary in color, shape and size as every piece is natural and unique. If you have specific requirements, please contact us.