A piece of vintage Trifari costume jewelry is typically valued between $20 and $100. Some common pieces may be available for under $10, while other more sought-after pieces may be valued at over $100, as of 2015.
Trifari's signature "Jelly Belly" brooches tend to be highly sought-after. These animal-shaped brooches set with a solid lucite bead tend to sell for between $50 and $100. Poodle-shaped brooches are particularly valuable according to CollectorsWeekly.com.
Another signature Trifari style is the crown brooch. These crown-shaped pins may be valued at around $50. Trifari jewelry tends to be set with rhinestones, enamel and gold or silver plating rather than precious metals or stones.