Unmarked Beauty Rhinestone Shades of Blue Navette Spray Pin in Style of Juliana

This is a lovely floral spray type pin with long navettes in sapphire, Indian Sapphire and ribbed. They are 15x7mm sapphire and Indian Sapphire forming a flower with a sapphire ab chaton in the middle. The pin is a massive 3 1/2" wide and about 2" tall. It is in what I would consider mint condition. The metal is rhodium plated and all stones are riveted in.. It is not marked. This is in the style of DeLizza and Elster or Juliana.