What Determines Value
What makes inherited costume jewelry valuable
Costume jewelry was never meant to be precious. It was designed as fashion — affordable, seasonal, disposable. But the best of it, made by specific designers during specific periods, has become genuinely collectible. Understanding what separates a $5 brooch from a $5,000 one comes down to a few key factors.
Designer signature — the single most important factor
The maker's name is everything in vintage costume jewelry. A beautifully designed rhinestone brooch with no signature might sell for $20. The same quality piece signed by a recognized designer can sell for $500 or more. The signature transforms costume jewelry from anonymous fashion accessory into a documented, attributable work by a known designer — and that is what collectors pay for.
Quality of materials and construction
The best vintage costume jewelry was made with remarkable care. Hand-set rhinestones in individually soldered prong settings. Hand-wired beads and pearls. Gold or rhodium plating over quality base metals. The difference between high-end vintage costume and mass-market fashion jewelry is immediately apparent when you hold the pieces — the weight, the finish, the precision of the stone settings all tell you whether something was made to last or made to sell cheaply.
Period — the 1930s through 1960s is the golden age
The golden age of American costume jewelry runs roughly from the 1930s through the 1960s. During this period, major designers were producing pieces with exceptional craftsmanship, often using high-quality Austrian crystal rhinestones, hand-finishing, and innovative designs. Pieces from this era are the most sought after by collectors. Earlier Art Deco pieces from the 1920s and early 1930s are also desirable. Pieces from the 1970s onward are generally less collected, with some notable exceptions.
Rarity of specific designs
Within any designer's output, some pieces are far rarer than others. A common Trifari leaf brooch and a rare Trifari jelly belly figural pin are worlds apart in value. Limited production runs, unusual color combinations, figural designs, and pieces that were expensive even when new tend to be the rarest and most valuable today. Matching sets — called parures — where the necklace, bracelet, brooch, and earrings all survive together are worth significantly more than individual pieces.
Key designers to know
Miriam Haskell
The most valuable name in costume jewelry. Miriam Haskell pieces are characterized by hand-wired baroque pearls, glass beads, and Russian gold-plated filigree findings. The construction is immediately recognizable to specialists — every bead and pearl is individually wired by hand, creating a dimensional, organic quality that machine-made jewelry cannot replicate. Not all Haskell is signed, particularly early pieces, but the construction technique is so distinctive that unsigned pieces can be confidently attributed. Signed Haskell necklaces, bracelets, and brooches from the 1940s and 1950s regularly sell for hundreds to thousands of dollars.
Eisenberg
Eisenberg started as a clothing company and began producing rhinestone jewelry as accessories for their dresses. Pieces marked "Eisenberg Original" (the earliest and most valuable mark) feature large, exceptional Swarovski crystal rhinestones in bold, dramatic designs. Later pieces marked "Eisenberg Ice" are also collectible but generally less valuable than the Originals. The quality of the rhinestones on Eisenberg pieces is consistently outstanding — the stones are large, bright, and beautifully cut.
Trifari
One of the most recognized names in costume jewelry, particularly pieces designed by Alfred Philippe from the 1930s through the 1960s. The crown mark is the identifying symbol. The most valuable Trifari pieces are the jelly belly figural pins — animal and figure designs with translucent lucite bellies — which can sell for thousands of dollars. Philippe's rhinestone brooches, crown pins, and floral designs are all actively collected.
Schiaparelli
Elsa Schiaparelli's bold, surrealist-influenced designs are highly sought after. Her costume jewelry features unusual color combinations, oversized stones, and dramatic designs that reflect her avant-garde fashion sensibility. Schiaparelli pieces are relatively rare compared to Trifari or Eisenberg, which drives collector demand. Complete sets are particularly valuable.
Other important makers
Weiss is known for exceptional rhinestone work, particularly in unusual colors like black and smoke. Hattie Carnegie produced high-quality pieces that complement her fashion designs. Kenneth Jay Lane created bold, oversized designs often inspired by fine jewelry. Ciner is known for heavy, well-made enamel and rhinestone pieces with a fine-jewelry aesthetic. Each of these makers has a dedicated collector following and pieces that regularly sell for hundreds of dollars.
How to identify signed pieces
Check the back of brooches near the pin mechanism or along the edge for stamped maker names. On necklaces, examine the clasp and any tags near the clasp. On earrings, check the posts, clips, or backs for small stamped marks. On bracelets, look at the clasp and the inside of links. Maker stamps are often small and can be worn with age, so use a magnifying glass and good light. Some marks are stamped directly into the metal; others are on small applied plates or tags.
What to look for when evaluating pieces
Quality of rhinestones matters — hand-set stones in individual prong settings indicate higher quality than glued stones. Weight and construction quality tell you a great deal; better pieces feel substantial and well-made. Figural designs — animals, insects, flowers, and human figures — are generally more collectible than abstract or geometric designs. And matching sets (parures) where multiple pieces survive together are worth more than the individual pieces would be separately.