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1.13CT ROUND MADAGASCAR SAPPHIRE, PARTI YELLOW BLUE GREEN, 5.83X5.78X4.31MM. Some light silk, visible in magnified photos but from a regular distance what stands out the most in this stone is the parti coloring! Thissapphire is presumed to be heated, a permanent treatment for color and clarity.

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.