Round Lime Sapphire Pendant
1.70 ct round concave cut lime yellow Sapphire with total 0.24ct diamonds set in 18ct white and yellow gold.

This stone is a fine yellow sapphire mined in the Songea valley of Tanzania. This sapphire has been heated together with beryllium which results in these yellow to orange-red stones and a variety of shades between them. This process was discovered by accident by the Thai dealers. Whilst heat-treating some natural Songea Sapphires, they inadvertently had a piece of Chrysoberyl mixed up with the stones in the furnace. The result was some spectacular colors in the yellow to orange range.

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