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← Pleochroism in tanzanite

Tanzanite in a gemmological polariscope.

By Duncan Parker | Published January 28, 2014 | Full size is 1600 × 1200 pixels

Another lot from the same auction, also at dupuis.ca, lot 376, is an oval of 9.29 carats and has a similarly fine colour, but a different shape.
Tanzanite in a gemmological polariscope.

Tanzanite in a gemmological polariscope.

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