Shown above is a natural fancy-colored sapphire from an unknow African location. Although this is a native cut stone, the faceting is reasonably good; the proprotion and facet shape are acceptable, and the polish is very good. The color is unusual because the crystal from which this stone was cut had both yellow and blue areas. The gem is primarily a golden yellow, but there are blue zones around the edges that are more or less noticeable as the stone is moved. The result is quite intriguing.

Note: Sapphire is commonly heat treated to improve both clarity and color. It should be assumed that the above gemstone has been so treated.

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