S100 is the smallest sample of Skystone currently available. It is a segment of a larger stone that parted during excavation. The mostly oxidized exterior is contrasted nicely by the rich “Skystone” blue interior. This stone does not contain a lot of veining and would be a good candidate for a use in jewelry. Weight 2.99 carats/ .598 grams. Dimensions 14.07 x 10.50 x 5.29mmInsured USPS Priority Shipping, Case, Letter of Authenticity, all included in price.