3.50 Carat Natural Tanzanite – Tanzania – No Heat / No Treatment

This 3.50-carat natural tanzanite from Tanzania displays a distinctive color shift, with blue, muted purple, and warm olive-golden tones appearing from different viewing angles. Its emerald step cut and clipped corners create a refined geometric outline, while the broad facets provide clear views of the stone’s changing coloration.

Presented as no heat / no treatment, this gemstone may appeal to collectors who appreciate tanzanite with unusual natural color characteristics. Its substantial size, transparent appearance, and elegant proportions also make it a strong candidate for a custom pendant or statement jewelry design.

The stone is accompanied by a Galaxy Gemological Institute report identifying it as natural zoisite, labeled Natural Tanzanite. The report lists the color as brownish purple and records treatment comments as “N/A”; the no-heat / no-treatment description is provided as supplied and is not independently confirmed here.

● Weight: 3.50 carats

● Gemstone: Natural Tanzanite

● Origin: Tanzania

● Treatment: Presented as no heat / no treatment

● Cut: Emerald step cut

● Measurements: 9.07 × 8.94 × 5.20 mm

● Report color: Brownish purple

● Transparency: Transparent

● Report number: PEW2606494656

● Price: $695

Rogue Valley Gem Exchange