Gem: Vanadium Kornerupine
Weight: 0.52 ct.
Dimensions: 5 mm exactly
Clarity: VVS
Origin: Umba Valley, Tanzania
Treatments: None
Comments:
This is a bit of an unusual color for kornerupine!! The color is so deep, and slightly out of the range of vanadium kornerupine's bright, lime-colored tones. But it still has dichroism, and I checked for chrome influence in the color and found none. So as it is, it's just a unique color, but there may be some actual, as-yet untested elemental reason for the unusual color. You would have to send it out to be chemically analyzed with Xray defraction analysis. For me, I'm happy to skip that cost, and just be happy to speculate.
This perfectly round, perfectly green, perfectly clean gemstone is begging to be put into a ring, in my opinion.
While the normal colors for vanadium kornerupine are usually lime green and leaf green, in this case, we have a gem whose dichroic colors are more like tsavorite or emerald on one axis, and teal on the other. In my experience, teal is usually associated with chrome content, but I could not find any.