Do you see blue or green? This viral test plays with color perception

[Lloyd]

Interesting article and visual test
https://www.theguardian.com/wellness...lor-perception

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[FredRydr]

The turquoise dispute has been well established in my house. ME? It's blue. SHE? It's green. Now I have this article to say we're both right.

[Skip]

After switching my own definitions several times I've finally decided that my Iro Turquoise is neither blue or green; it's just simply turquoise, ~an interesting, fascinating color all to itself...

[Chrissy]

For me turquoise is green. Actually, I always thought it was turquoise.

[calamus]

I have a different perspective. I was a stonecutter and a silversmith for more than 20 years, and during the 1970s and '80s I cut thousands of carats of turquoise. Working with the actual stone, as opposed to an ink whose color was named after the stone, I can say without fear of contradiction that turquoise comes in a number of different hues, depending on the mine it comes from and even what part of the mine, and the minerals that were present in the soil and water when it was formed. The iconic variety of turquoise that comes from the Kingman mine in Kingman, Arizona, for example, is a bright robin's egg blue; however, some Kingman is unquestionably greenish. Morenci is another one that produces very blue turquoises. Turquoise from certain other mines, like Royston and old Evans, for example, tend have a strong greenish cast to them, and are often more green than blue. Then again, sometimes you'll find a piece of Royston or Evans turquoise that's predominantly blue. Other turquoises fall in various places all over the spectrum; for many of them it's anybody's call whether it's blue, green, or a bit of both. I'm going to post some representative photos of the "name brand" turquoises I mentioned so that you'll see what I'm talking about. I'll also throw in one that has blue and green, a beautiful but now hard to find turquoise that used to be called Pinto Valley, then Castle Dome, and then Sleeping Beauty, before finally changing its name to Pretty Much Unobtainium. It's often very blue, like Kingman, only a little bit lighter, although it also comes in the bluish/greenish turquoise color you see in the photo, and which viewers might argue over.

Kingman-Turquoise.jpg

Morenci-Turquoise.jpg

Royston-Turquoise.jpg

Evans-Turquoise.jpg

Castle-Dome-Turquoise.jpg

[FredRydr]

Is that silver naturally in the Morenci? That's cool!

[calamus]

The silver-colored inclusions in the Morenci cabs are iron pyrite. Iron pyrite occurs in a range of colors from silver to gold to brown. The yellow form is also called "fool's gold."