This is a a absolutely amazing Montana sapphire the size is out of this world one of the largest faceted Montana sapphires ever at 7.35cts. The color is the most beautiful green extremely well saturated and no treatment of any kind. The clarity is SI but don't let that fool you it is absolutely beautiful and on stones this large flawless usually means fake this is all natural. We pulled this beautiful green sapphire from our mine on the eldorado bar outside of Helena Montana. The dimensions are 11.4mm!!!! This seriously is a one of a kind beast of a stone.