This piece is a vintage royal crown stick pin, heavily inspired by iconic mid-century costume jewelry designs like the 1945 Crown Trifari series designed by Alfred Philippe. 

The gold-tone setting features:

• Faux pearls lining the arches of the tiara peaks.

• Jeweled rhinestone accents along the baseband, mimicking emeralds, rubies, and sapphires.

Based on comparable sales of unmarked, mass-produced vintage costume jewelry stick pins from the 1960s to 1980s, the estimated market value for this pin is $8.00 to $15.00 USD.

Because it lacks a designer hallmark (such as Trifari or Coro), its value relies entirely on its visual appeal as a retro collectible rather than a brand name.