Here's another pair for the dog bone folks.

The double is one that never got separated. I don't think it should be called "a speo" since I don't think they were made using that process. The neck is deep cobalt blue. If I couldn't see transmited light through the neck I would have called this black, red, black, white and red. I think that the 2 black layers are very dark cobalt. About 22x30 each bead.

The short strand of similar beads are lapidary worked. The black in these might be dark cobalt, also. The red is the same as the larger ones. The pattern is white, black, white, red, white, black. Each bead is about 16x19 with a 13 to 14 neck.