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1.35CT HEXAGON ROSECUT MONTANA SAPPHIRE, SEAFOAM GREEN, 6.21X7.3MM. This sapphire was mined and cut in Montana, USA. It features a unique double rosecut design, with facets on top and on the underside of the stone. It is presumed heated. Great clarity and a lovely light seafoam minty green color.

About Heat Treatments: Some colored gemstones are routinely heated for color and clarity improvement. This is a permanent treatment and typically only involves heat and not chemicals. The treatment mimics what the earth does naturally to gemstones as they reach the surface. If the stone says "Unheated," it is not treated in any way.