Buy it here →One 1.31 carats round brilliant cut sapphire from Rock Creek Montana, blue green to color changing gren blue in daylight to blue green in incandescent light, VS clarity, cut grade excellent, measuring 6.3 mm wide, 6.4 mm long, 4.4 mm deep; with excellent polish and very good symmetry. The proportions of the sapphire are as follows: total depth 69.3%, table width 47.3%. Sapphire is heated to enhance color. Cut by Steve Moriarty.