5.05 Carat Cornflower Blue Tanzanite Cushion Cut European Gem Lab Certified
Updated August 19, 2026
This auction ended on August 28, 2026.
See upcoming auctions from California Gemstones.
| Lot number | 8206 |
| Estimate | $17,000 - $18,000 |
| Opening bid | $50 |
| Auction | Friday Aug 28 4pm |
| Date | August 28, 2026 at 7:00 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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