Stone Guide
Spinel
Origin: Mahenge (Tanzania), Mogok (Myanmar), Luc Yen (Vietnam)
What Makes It Special
The trade professionals are buying spinel aggressively, and for good reason. For centuries, even the Royal Families mistook spinel for ruby. A 5ct Mahenge spinel with genuine neon color will run you K-K while the equivalent Burma ruby would be K to M. The math is absurd. A premium Mahenge doesn't just reflect light, it generates it. And Mogok red spinel shares the exact same geography as Burma ruby but is almost always unheated. The market is correcting the historical mispricing right now, making it the smartest buy in colored stones.
Required Documentation
Unlike sapphires and rubies, spinel is almost never treated — unheated is the standard, not the exception. The bigger value factor is origin: Mahenge commands premium, followed by Mogok, then Luc Yen.
Price Guide 2026
⚠️ Spinel is almost never treated — it is one of the few gemstones where unheated is the default. This makes spinel exceptional value compared to sapphires and rubies where no-heat commands enormous premiums.
Notable Auction Records
Mahenge spinel, 50.13ct, neon pink
Christie's Geneva 2020
$3.9M
$77,800/ct
Mogok red spinel, 16.19ct
Sotheby's Geneva 2019
$1.76M
$108,700/ct
Mahenge spinel, 8.87ct neon
Bonhams 2022
$485,000
$54,700/ct
Dealer's Notes
I buy spinel aggressively right now. Trade professionals know that a 5ct Mahenge spinel with neon color runs -50K, while a 5ct Burma ruby of equivalent visual impact is K-M. The ratio is absurd, and the window to buy is open.
When I look at a Mahenge neon pink, I'm looking for a stone that doesn't just look pink—it appears to generate light rather than reflect it. That electric, glowing tell is how I know I'm holding top material.
Mogok red spinel comes from the exact same dirt as Burma ruby. It has a similar color, and it's typically unheated. The price gap between Mogok ruby and Mogok spinel is closing fast. I buy it while the market is still catching up.
The history of this stone is built on mistaken identity. The Black Prince's Ruby in the British Crown Jewels? That's a spinel. The market corrected this mispricing around 2010 and it is still correcting.
I always test vivid red 'rubies' in Victorian jewelry. Frequently, they are spinels that predate modern gemology. Finding a top untreated pre-1900 spinel sold as a ruby is one of the best flips in the business.
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