Hi There was a recent comment regarding the effect on a faceted
stone of a setting that permits light to come in from the back. Out
of curiosity, I put a ring under a microscope and photographed the
stone with lighting from the front, the back and from both front and
back. I could see no real difference with the back lighting. You can
see the results at
The stone in the picture is a color-change garnet. I wanted to
photograph the change, and I got a surprise. The color change is from
reddish to greenish. Under daylight, I saw the green of the stone.
But when I photographed it, the picture showed the red of the stone.
I had to use a graphics program to modify the picture to show what I
saw. You can see the pictures at the same spot as indicated above.
Does anyone have any comments about the accuracy of photographs of
color-change stones under incandescent lighting, an Ott ("natural"
daylight) lamp, and actual daylight?