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1.04CT BRILLIANT ROUND MADAGASCAR SAPPHIRE, COLOR SHIFTING TEAL BLUE GREEN TO WARM GREY, 5.97X4.19MM. Very cool, strong color-shifting stone. See the photos in the listing here to see the color variation. Will shift from teal blue green in outdoor light to warm purple grey indoors. Great clarity on this stone. It is presumed 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.