5.05 Carat Cornflower Blue Tanzanite Cushion Cut European Gem Lab Certified
Updated August 6, 2026
| Lot number | 0206 |
| Estimate | $7,000 - $8,000 |
| Opening bid | $200 |
| Auction | August 9 7pm Sunday Certified Tourmalines |
| Date | August 9, 2026 at 10:00 PM EDT |
| Auction house | California Gemstones |
| Location | Oceanside, California |
With a cornflower blue color features a pillow-like rectangular or square shape with curved corners and a rare, highly valued medium-vivid blue hue reminiscent of fine sapphire. Natural zoisite mined
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