- Sep 20, 2008
I found this online. My spinel is very similar to the one on the left in color.
What is spinel? A look at the causes of color and magnetism in natural spinel, synthetic blue spinel and cobalt spinel.www.gemstonemagnetism.com
Absolutely!Good information at that link. Cobalt can also be a blue color chromophore, and they're saying that spinels with a high cobalt content will fluoresce because there's less iron to quench the fluorescence. Just given the rarity of cobalt spinels, I would want a lab report before claiming my spinel had cobalt.
That’s so pretty!! It definitely has a reddish component to the color, indicating there may be chromium, hence why it may fluoresce. Thanks for the photos.
Purple/violet spinels with red/pink fluorescence are frequently seen, natural stones, of course.
Some orange, blue, grey, mauve spinels also fluorescent.
Once there was a color changing spinel, blue to violet, with red fluorescence under uv light, very interesting piece, one stone, three shades in various lighting conditions, sounds like ‘buy one get two free’, lol
Definitely sounds interesting!
I couldn't get the blacklight photos to come out as anything but a purple blur, but here's a photo under cool LED light of my ring set with two gray spinels. The lighter one, which looks more gray and less bluish than the darker one in this photo, definitely fluoresces pink, even though I can't get a good picture of the fluorescence. By the way, the blue background is the blue cover of a book--it's not color distortion.
Here are a couple of very old photos of this ring in different lighting, from when my hands were much younger. (This was an old setting I bought cheap in the glory days of eBay and set with a pair of gray spinels--back then nobody wanted gray spinels, and you could buy them for the price of a nice lunch.)