The recent thread on glass amethyst going to blue under
fluorescents reminded me of a mystery I’ve never been able to
solve. I thought perhaps someone on the list might have an idea.
Several years ago, I was sent some pink CZ (you remember the
"pink ice" craze?) to photograph. I’d asked for photos, but got
the comment “they kept coming out blue.” Pooh, I thought. They
probably hired a photographer who didn’t know how to properly
Well, I sent them on to one of the gem photographers I worked
with regularly. A week later she calls me up and say, “It’s the
darndest thing: every photo we shot came out blue! Bright blue!
We tried again, with another light source, and it’s still blue!
It looks pink under the lights, but on film its blue.”
She called another well-known gem photographer, and he basically
said, “yup, pink CZ turns blue on film.” I gather that in the ads
you see for pink CZ, the photos been scanned and the color
What I don’t understand is why it happens. Anybody have any