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Color Characteristics of Investment-Grade Tanzanite Over 50 Carats
October 8, 2024 3:59 am
The tanzanites in this picture range from 50 to 200 carats and showcase an inky blue hue that is significantly darker than smaller stones. In fact, some large tanzanite can be so intensely blue that it approaches a nearly black appearance.
As tanzanite sizes exceed 35 carats, carat weight and rarity become the primary factors influencing value. In many cases, the proportions or cut may be less than ideal, as achieving perfect proportions often results in excessive carat weight loss.
Tanzanites over 50 carats typically display very dark shades, ranging from navy blue to blue-black. These larger stones are frequently graded with a tone and saturation above the optimal 6/6 level commonly seen in stones under 30 carats. This enhanced saturation is a result of their size, which allows them to “hold” more color, along with deeper pavilions (the undersides of the cut) that enhance their overall appearance.
