Myanmar (Burma), Thailand, India, Sri Lanka (Ceylon), Tanzania, Afghanistan, Australia, Brazil, Cambodia, Malagasy Republic, Malawi, Pakistan, Zimbabwe (Rhodesia), United States (Montana, North Carolina).
Appearance
Sapphire is occassionally found with such color-zoning, that the crystals make interesting bi-colored gems.
Enhancements
Bi-color sapphire is always heat treated to produce, intensify or lighten color and/or improve color uniformity and appearance.
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