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How Does Heat Treatment Affect Blue Sapphire:
To increase the color quality and to reduce or eliminate color zoning , transparency several heating technique are used.A blue sapphire stone is to be heated on high temperature to enhance its appearance and to reduce several anomalies from stone. A natural Blue sapphire stone though it is embodies all enchanting properties though it looks dull in its appearance.In order to increase look or appearance of a stone it is to be heated at high temperature of almost 4000 celsius which enhances color and reduce several anomalies.However a sapphire should be heated in such a manner so that it does not lost its original powers.
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