5.16ct Dark Blue Montana Sapphire Fancy Barion Emerald Cut

This rich dark blue Montana Sapphire carries a subtle teal shift in daylight, revealing its complexity as it moves between light sources. Cut by American cutter Barbara Thomas into a fancy barion emerald cut, it features a barion-style crown paired with a full barion pavilion. The stone showcases opposing crown facets that create a distinctive rhythmic pattern while still centering a traditional table within its oval-cushion outline. Measuring 13 x 6.5mm and weighing 5.16 carats—an unusually large size for a Montana Sapphire—this stone shows very good overall clarity, with one eye-visible inclusion near one end and a second minor inclusion on the pavilion that remains hidden face-up. Treated with heat-only by our team, this sapphire balances a natural character in a way that feels both bold and refined. To learn more about the story behind this gem, visit the Montana Sapphire Gem Facts Page.