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1.21CT ROUND MONTANA SAPPHIRE, PURPLE DENIM BLUE, 6.1X4MM. Good clarity with minor silk in the center of the stone. Some color variation present in the gem and some color change when the stone is in varied light settings (purple to blue). Heated.
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.