VTG 1950s Unsigned Pin Brooch Atomic Starburst UV Glass Rhinestones Goldtone

For your consideration is this stunning vintage sunburst brooch most likely produced during the 1950s. The piece is unsigned and seller has been unsuccessful in identifying the original brand this was sold under. The piece is made up of five layers riveted together. The top and center layer consists of a rich pink statement chaton cut rhinestone. This rhinestone glows a bright green under 365nm UV light indicating Manganese content and measures a little over 10mm in diameter. The next riveted layer consists of 10 branches with lavender chaton cut rhinestones on the end of each. These rhinestones also glow a bright green under 365nm UV light indicating manganese content and measure 3.5 mm each. The next layer consists of 12 branches with alternating aquamarine and lavender rhinestones each measuring 4.5 mm each. The lavender rhinestones glow under 365nm UV light indicating manganese content. The fourth layer consists of 12 branches with peridot rhinestones each measuring 6mm each. Thes