3.80 Carat ---- Natural Blue Spinel-- Round Cut
Updated August 27, 2026
| Lot number | 90641 |
| Estimate | $3,500 - $4,500 |
| Opening bid | $320 |
| Auction | September 19 Saturday 4pm |
| Date | September 19, 2026 at 7:00 PM EDT |
| Auction house | California Gemstones |
| Location | Oceanside, California |
A rare and durable gemstone featuring vibrant brilliance, and untreated natural sky blue color.
Register & bid on this lot at Bidspirit →
More lots in this auction
- 8.80 Carat ---- Natural Sri Lankan Blue Sapphire-- Asscher Cut
- 11.00 Carat ----Natural Burmese Pink Sapphire---- Brilliant Oval Cut
- 18 Carat --- Natural grandiderite PAIR-- Trillion Cut
- 3.00 Carat ---- Natural Pink Sapphire -- Oval Cut
- 10 Carat --- Natural Blue Sapphire--- Brilliant Oval Cut
- 7.75 Carat ---- Natural Mozambique Ruby -- Oval Cut
- 8.5 Carat --- Natural Mozambique Blood Ruby --- Brilliant Cushion Cut
- 2.85 Carat ---- Natural Deep Blue Tanzanite -- Pear Cut