This heated Montana sapphire is a rich teal blue color, a classic Montana sapphire color and one of my favorites. The color was developed by heating the gem in Montana, but no other treatments were made to the gem. The treatment is permanent and stable and not only develops the color, but also improves the clarity. The sapphire has tiny inclusions that are not visible without a 10x loupe; it’s an eye-clean gemstone.
This sapphire is faceted in my custom “Helena” brilliant oval design that has been optimized for sapphire. The gem weighs 1.42 carats and measures 7.0 x 5.9 x 4.4 mm. It would make a gorgeous center stone for a one-of-a-kind engagement ring.