Hi John, I hope you and the family are well! Now thatīs a really "WOW"-bead for sure and far away from being an expert I have more (silly) questions than answers...My first question would be how you count the layers (and that may answer the other questions as well)? Putting numbers seems much easier for me than a description of the areas in question...

1) Am I right that this looks like a decoration and not a layer?

2) Are the "white and "black" parts colored glass or one or both of them chemical reactions from laying in the ground and just covering the original color?

3) These 6 parts are pretty thin and were added to the (whatever colored) base?

Finding such a "one of a kind" beads must be the highlights of every collectors life...Congratulation!

Hello Uwe
Thanks for your insights
Yes it looks like a trail decoration.
The white is the result of chemical reactions due to its length in the ground.
The black is actually a semi translucent dark blue like the more common bead in the next picture which is also showing the other side of the bead.
The 6 yellowish parts are to me some kind of fat stripes.
JP

Most-likely an a-speo bead.

My first question would be, what is its size?

Hello Jamey
The bead is 13 x 17mm
Could they be related in time and manufacture as these four also found in the same area?
Diameter are 17 to 19mm
JP

A few more found in the same area.
It seems like that the Rosetta bead have some embedded red canes in the last layer, but why would they be covered up?
Size from 14 to 20mm
JP

A few more found in the same area.
It seems like that the Rosetta bead have some embedded red canes in the last layer, but why would they be covered up?
Size from 14 to 20mm
JP