A 10.90ct large peridot s-i grade which mean slightly included, but still a very attactive large untreated stone, ideal to make a ring maybe for a young memeber for your family, email us after perchase if you would like a price for a ring or pendant setting mount. the stone - Dimensions (mm)15.700 x 10.040 x 7.010 mm - Weight (cts)10.90 - Type Emerald cut Faceted, Free post