10.90 Carat Natural Blue Tourmaline Brilliant Pear Cut EGL Certified
Updated August 6, 2026
| Lot number | 0225 |
| Estimate | $13,000 - $14,000 |
| 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 highly valuable investment-grade collector's gemstone. Round brilliant cuts on large colored stones are less standard (as rough is usually cut to maximize weight in oval or cushion shapes), making
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