This beautiful heated Montana sapphire is a gorgeous robin’s egg blue, a bright blue tinted with green that reminds me of the color of the eggs of the American Robin. 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. This sapphire has very good clarity, with just a few tiny inclusions only visible with a 10x loupe.
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 1.03 carats and measures 6.0 x 3.8 mm; the perfect size for an engagement ring.