While looking though finds from graves near the salt mines of Dürrnberg, I noticed a couple of necklaces comprised of only cobalt glass and amber and I found them very striking. They appear at other sites as well, including some from Switzerland. Realistically, both bead types are so prevalent that I have to imagine this type of jewelry is not at all uncommon (and both plain amber and plain cobalt necklaces show in in graves as well). I decided that I would craft one based loosely on grave 193#2 from the Römersteig grave group.
In the extant piece the cobalt glass beads ranged from .95-1.1 cm and the amber was .65-1 cm. The amber I was able to order ranged up to 1.3 cm, and I made my cobalt beads in a range that compliments that size. My clasp is an S-hook and ring, even though no clasp was found in the grave to my knowledge.