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Unheated Tanzanite 1.51 (SQT151)

Untreated Green blue purple Tanzanite
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Price:
$2,500.00
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1.51 Carat
Aquarelle in Violet-Blue-Purple 
Medium 50
Free of Inclusions

Details:

GRADING REPORT SQT151

Identification: Natural Unheated & Untreated Tanzanite

Carat: 1.51

Shape: Square Cushion

Measures: 6.17x6.19x5.25 (millimeter)

- Color Grade: Very Good

- Tone: M50

Color Zoning: Gradually

Clarity: Free of Inclusions

Cutting Grade: Very Good

o       Brilliancy: 90% (see comment)

o       Depth: 84%

Origin: Tanzania

Treatment: None

 

Certificate No: IGI 279792187

 

Overall Grade: Very Good

Comment: Beautiful, always different, from sapphire blue to flowery violet, purple and light green at times. Like the others from this parcel, the cutter did a wild but effective job, pressing depth to produce dense hues and more luster than common. See the sideimages, with the legendary pleochroism of zoiste, splitting light into different colors, changing with viewing angle. Unheated tanzanites, strictly speaking untreated zoiste, have gained well deserved attention lately, each like an ever-work-in-progress aquarelle of watery landscapes. No inclusions, no window, no treatments. Mild but sparkly.

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