5.00 Carat Natural Blue Tanzanite Trilliion Cut AGL Certified
Updated August 6, 2026
| Lot number | 0212 |
| Estimate | $2,500 - $3,500 |
| Opening bid | $100 |
| Auction | August 9 7pm Sunday Certified Tourmalines |
| Date | August 9, 2026 at 10:00 PM EDT |
| Auction house | California Gemstones |
| Location | Oceanside, California |
A premium-grade, investment-sized loose gemstone known for its exceptional brilliance and distinct triangular symmetry. Tanzanite is a single-source gem found exclusively near Mount Kilimanjaro in
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