Bidspirit auction | Tanzanite 11.86 ct, violet-blue,

Tanzanite 11.86 ct, violet-blue, - Tanzanite 11.86 ct, violet-blue, with very good color brilliance, transparent with very, very few internal inclusions, square cushion cut, 12.51 x 12.41 x 9.28 mm, with 2025 appraisal valued at over 13,800 euros