Thanks Jamey for your input
The teal is the right name for the first and fourth layer. The second layer with a magnifier I see it like a saturated purple, close to black.
Here are pictures of both side views.
This is an interesting and valid explanation.
Do you mean there are 12 internal red layers in the teal? Could they be external?
I think the yellow stripes have been applied separately to the teal as there is no trace of the red next to them or around them.
This thin red layer or internal stripes which are all around the bead intrigued me a lot...
JP