Unheated Umba sapphires from Tanzania showing a striking range of candy-like colors including pink, violet, yellow, orange, green, and blue. The Umba Valley is famed for producing sapphires in an unusually broad spectrum of natural shades, many of which are rarely seen from other sources. These are untreated, preserving their original character and making them especially appealing for cutters and collectors who value natural color diversity.
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14 pieces / 5.466 grams / 27.33 carats / 27.33 carat average
Estimate: $625 - $650
