Umba Sapphires from the Umba Valley, Tanzania. Unheated lot of top colors
Cornflower blue, violet-blue, periwinkle, lavender, blue-green, smoky blue-gray and pale silvery blue
Sought after colors in selected rough
37 pieces / 19.79 grams / 98.94 carats / 2.7 carat average / AA+ - AAA+ / 85-95+ clean
Estimate: $1500 - $1650
