07/09/2026
I have loved spinels for as long as I have been in this trade. The reds of Mogok held me first, then the cobalt blues coming out of Vietnam — and then, at a Hong Kong show a few years ago, a twenty-carat Mahenge spinel from Tanzania that I have measured pink stones against ever since.
Spinel spent centuries being mistaken for ruby. Today it is very much its own stone, and the reason collectors take it seriously is simple: it reaches the market untreated, and a fine one keeps its color in daylight, where most stones go quiet. That daylight test is the single most useful habit a buyer can bring to any pink gem.
I’ve just published a full guide to judging Mahenge spinel — what the name promises, how it sits beside pink sapphire and padparadscha, and what a lab report can and cannot document. Link in bio.
And if you would rather see the color than read about it: we are at Jewellery & Gem WORLD Hong Kong, 14–18 September, Fine Gem Pavilion, Booth 7R-28. Come by with your questions — daylight is not far from the booth.
FineJewelry JGWHongKong