This gorgeous unheated Montana sapphire is a beautiful blue-green aquamarine color with excellent saturation. It has a slight amount of silk but not enough to impact the brilliance in any way. In the hand its a very bright and richly-colored gemstone.
I faceted this sapphire in my modified round brilliant design that I’ve optimized for sapphire and the brilliance is excellent. The gem weighs 1.20 carats and measures 5.8 x 4.3 mm; the perfect size for an engagement ring.