Mesmerizing shades of blue are found in this pin by DeLizza & Elster, aka Juliana. This is a book piece and a different color version can be found on page 56 of Ann Pitman's Juliana Jewelry Reference Book.
The round blue heliotrope rivolis are surrounded by blue AB and Capri blue rhinestones. The gorgeous rivolis flash shades of blue and green.
The large 2.5 inch brooch is set in silver tone metal. It is in excellent condition.