This lovely unheated Montana sapphire is mix of light blue and light yellow–what’s referred to as a “parti-colored” sapphire in the gem trade. As it’s held in the hand, you can see flashes of light yellow and blue from the color zones in the gem. The sapphire has a very light amount of natural rutile silk, but it’s just barely visible without a 10x loupe–in the hand this is a very bright and scintillating gemstone.
This sapphire is faceted in a modified version of the classic diamond round brilliant design that is optimized for sapphire and cut to “hearts and arrows” precision; the result is a glittering beauty of a gemstone. The gem weighs 1.20 carats and measures 6.4 x 4.1 mm; the perfect size for an engagement ring.