9.65 ct Vivid Blue-Violet Tanzanite — PGS Report

Collector's Note
A nearly 10-carat tanzanite with the kind of color and presence that immediately commands attention. The stone shows a vivid blue face-up appearance with violet flashes from certain angles, excellent transparency and a completely eye-clean presentation. Its cushion mixed cut delivers strong light return and a broad, balanced face-up spread.

Gemstone Details
Gemstone: Natural Tanzanite
Species: Zoisite
Weight: 9.65 ct
Shape / Cut: Cushion Mixed Cut 
Measurements: 14.11 × 10.35 × 8.18 mm
Color: Vivid Blue with Violet Flashes
Transparency / Clarity: Transparent / Eye-Clean
Origin: Tanzania
Treatment: Heated (standard for tanzanite)

O50 Collector Evaluation
Otzera 50 Score: 46 — Exceptional
Face-Up Performance: 93%
This stone stands out for its saturated color, excellent transparency, strong optical performance and substantial near-10-carat size.

Laboratory Documentation
Accompanied by Professional Gem Sciences Laboratory Report No. 43060109.

Treatment
Tanzanite is gently warmed after mining to bring out its blue-violet color. This has been standard practice since the gem was found in Tanzania in 1967, and it is how all tanzanite is valued. The color is permanent and stable and needs no special care.

Care & Setting
Tanzanite should be protected from sharp impacts and sudden temperature changes. Clean with warm water, mild soap and a soft brush. Avoid ultrasonic and steam cleaning.

Digital Gem Passport
Accompanied by an Otzera Digital Gem Passport preserving the gemstone's identifying details, O50 evaluation and laboratory documentation.