4.87 Carat Brazilian Tourmaline Brilliant Round Cut European Gem Lab Certified
Updated August 6, 2026
| Lot number | 3005 |
| Estimate | $1,500 - $4,800 |
| Opening bid | $10 |
| Auction | Aug 15 Sat 7pm $10 Starts No Reserve |
| Date | August 15, 2026 at 10:00 PM EDT |
| Auction house | California Gemstones |
| Location | Oceanside, California |
Brazilian tourmaline is an exceptionally rare, large copper-bearing gemstone featuring electric neon-blue to greenish-blue hues, symmetrical round facet geometry, and high market value due to its
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