A piece of vintage Trifari costume jewelry may be worth less than $5 or over $250 as of 2015. The exact value varies depending on the materials and the demand for a particular design. Trifari jewelry is available on eBay.com and JewelsOfYesterYear.com.
Trifari was founded in 1910 by Gustavo Trifari, an Italian immigrant to the United States. The company is known for producing costume jewelry worn by various celebrities and public figures. The company's signature crown-shaped brooches are frequently valued at around $30 to $50 on auction website such as eBay. A set of Trifari jewelry, including earrings, necklace and brooch, may fetch $100 if the set is in good condition.