5.10 Carat--- Natural Blue Tourmaline ---Brilliant Round Cut ---- EGL Certified
Updated August 6, 2026
| Lot number | 0830 |
| Estimate | $4,000 - $6,000 |
| Opening bid | $15 |
| Auction | August 16 7pm Sunday Best prices |
| Date | August 16, 2026 at 10:00 PM EDT |
| Auction house | California Gemstones |
| Location | Oceanside, California |
Natural blue tourmaline—known as indicolite—in a brilliant round cut is an incredibly vibrant, and highly collectible gemstone. It combines a lively tropical blue to deep-sea teal hue with
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