1.23-Carat Robin’s Egg Blue Montana Sapphire (Heated)


A beautiful robin’s egg blue heated Montana sapphire cut in our custom “Eureka” brilliant rectangle cushion design, 1.23 carats.

In stock


This beautiful heated Montana sapphire is a gorgeous robin’s egg blue, one of the finest shades of blue found in the Montana gems. 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 appears to be nearly flawless. There are no visible inclusions, even when examined with a 10x loupe.

This sapphire is faceted in our custom “Eureka” brilliant rectangle cushion design, created and optimized for sapphire. The result is a glittering beauty of a gemstone. The gem weighs 1.23 carats and measures 6.7 x 5.1 x 4.3 mm; the perfect size for an engagement ring.

Additional information

Weight1 oz
Dimensions3 × 2 × 1 in

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