The luster on this Montana sapphire is absolutely incredible. Every time you move the stone you get beautiful flashes of light everywhere. The color is a light blue teal that is extremely sought after in Montana sapphires making this a dream engagement ring stone. The cut is top notch and let's the stone stand apart from other Montana's. This stone has been heated to enhance it's natural beauty. The clarity is VVS meaning no inclusions visible to the eye. The dimensions are 6.8mm.