Celtic Brooch with Alexandrite

Here is a Celtic brooch, a penannular brooch, which I just finished making. John helped me set it with

10 mm alexandrite, lab created gem stones. These stones change color according to what light
they are in. In full dalight they are a royal blue. Indoors, under electric lights, they are purple.
Sometimes they seem to be both colors at once! I think its really amazing.

Below is a photo showing it pinned to a hand woven silk scarf.
To fasten, you push the straight pin in
and out of the fabric, swivel the circle so that one end goes under the exposed point of the pin, and
the pressure of the fabric on the pin is what holds it fast.
Very clever, those ancient Celts!
This pin is about 2 inches across. I made it for a woman who weaves, but is entirely blind. She is giving it as a gift, with something she has woven, for a very special friend.