Bi Color Sapphire Price. Color zoning occurs when there is an uneven distribution of color in a stone and is caused during formation of the crystal when conditions of the trace elements which color the stone change. Bi color sapphire 1 83 carats unheated bi color sapphire blue white color combo loose gemstone gemstone for jewelry making rare.
The bi color sapphire is a stone that contains two colors as a result of color zoning. Many sapphires on the market are actually grayish. Color zoning occurs when there is an uneven distribution of color in a stone and is caused during formation of the crystal when conditions of the trace elements which color the stone change.
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Oval 1 00 1 39 ct. Sapphires have been shot under daylight. Oval 1 40 2 50 cts. Many sapphires on the market are actually grayish.