DeLizza and Elster a/k/a Juliana large siam red glass stones in a tiffany prong setting accented with dark fuchsia, red and aurora borealis chatons and siam red navettes.  Set in the gun metal finish also known as japanned.  This piece is also domed.  The fuchsia chatons are darker in person. 

Measurements:  2" in diameter. 1" profile

In pristine condition.  No scratches, dings, chips or damage of any kind to the glass stones.  All chatons and navettes are present and brilliant.  All prongs are present and secure.  Pin closure in perfect working condition.  No flaking or discoloration to the gun metal (japanning).

This piece is featured in Ann Pitman's Juliana Jewelry Reference Guide on page 102.  This brooch is from 1963 wiith a value of $150-$250.