I don't think much blue prystal bakelite was made, and most of it has turned color, some to black, some to green. This clip still shows blue in the sunlight!
I have several of these faceted clips, in apple juice, orange juice, cherry juice. Collect all the colors and wear them on your lapel like a rainbow!
The clip is gracefully curved, 1 3/4" long, no chips or cracks, with great patina!