Delizza and Elster a/k/a  Juliana dangle earrings (shoulder dusters)  of prong set Montana blue open back narrow navettes and chatons, aurora borealis chatons and one baby blue and green chaton.  Juliana dangle earrings are more difficult to come across. 

Measurements: 3" long 3/4" wide.

In excellent vintage condition.  All navettes present and brilliant.  No chips, scratches or damage of any kind.  All chatons present and brilliant.  No discoloration or flaking to the silver tone.  Clip ons in perfect working condition.

The Medallion Style is featured on page 211 of Ann Pitman's Juliana Jewelry Reference Guide.