Costume Jewelry Maker Marks: Beginner Reference by Maker

Where costume jewelry makers usually placed their marks

On costume jewelry, the mark is often on a functional part rather than a formal hallmark panel. Check the back of brooches, the reverse of clip earrings, the inside of bangle bracelets, necklace hook ends, fold-over clasps, hang tags, earring clips, and the underside of molded metal settings.

Many marks are shallow, worn, or partly hidden under plating, verdigris, glue, or replaced findings. A mark on a clasp may identify only the clasp supplier if the clasp was replaced, so always compare the signature with the design, materials, and construction of the whole piece.

• Use magnification and angled light to read faint stamped letters.
• Photograph marks before cleaning, because aggressive polishing can remove plating or blur shallow signatures.
• Look for both a name mark and a copyright symbol, but do not assume the symbol gives an exact date by itself.

Trifari, Coro, and Monet: common names beginners find first

Trifari is one of the most collected American costume jewelry names. Beginners may see marks such as TRIFARI, a crown over T, or earlier linked initials associated with Trifari, Krussman and Fishel; the exact mark style matters, but it should be evaluated with the plating quality, clean castings, stone setting, and clasp type.

Coro jewelry appears under several related names, including CORO, Corocraft, and Vendome. Coro pieces range from modest mass-market designs to more elaborate rhinestone, enamel, and figurals, so the mark alone is not enough to determine desirability or value.

Monet is frequently found on gold-tone and silver-tone necklaces, bracelets, and earrings with smooth plating and sturdy hardware. MONET marks are common on late twentieth-century fashion jewelry, and condition of plating, hinge tension, and matching sets usually matter more than the signature alone.

• Trifari clue: crisp metalwork and carefully set rhinestones or faux pearls on better pieces.
• Coro clue: broad variety, from simple floral pins to complex mechanical or figural designs.
• Monet clue: clean modern styling, durable chains, and branded clasps or earring backs.

Rhinestone makers: Eisenberg, Weiss, Kramer, Boucher, and Bogoff

Eisenberg is associated with bold rhinestone work, and marks may include Eisenberg Original, Eisenberg Ice, or Eisenberg in different formats. Because stones can be replaced and unsigned lookalikes are common, inspect the prong work, backing metal, and wear pattern before treating a piece as a higher-end example.

Weiss pieces often feature bright rhinestones, japanned metal backs on some designs, and colorful figural or floral motifs. A WEISS mark is helpful, but beginners should check for dead rhinestones, glued replacements, and loose settings because these issues strongly affect collectibility.

Kramer, Marcel Boucher, and Bogoff all produced signed rhinestone costume jewelry that can be mistaken for one another at a glance. Look for maker-specific marks such as KRAMER, Kramer of New York, BOUCHER or a Boucher inventory number, and BOGOFF, but confirm with style, construction, and reliable reference images rather than a single online listing.

• Good rhinestone settings usually have even prongs, consistent stone sizes, and secure backs.
• Foiled rhinestones can darken with age or moisture; this is common but affects appearance.
• Glue residue around stones may signal later repairs or replacement stones.

Designer-style costume names: Miriam Haskell, Hobe, Napier, and Hattie Carnegie

Miriam Haskell jewelry is known for hand-wired construction, faux pearls, seed beads, filigree backs, and layered floral or necklace designs. Many authentic Haskell pieces are signed with a plaque or oval tag, but some early or component-based pieces require expert hands-on inspection because construction details are more important than a simple name tag.

Hobe pieces may show a HOBE mark and often combine theatrical styling, high relief metalwork, glass stones, and pearl-like beads. Hobe marks and designs vary, so compare the mark placement, metal finish, and clasp style with documented examples before making a confident identification.

Napier and Hattie Carnegie appear on a wide range of signed costume jewelry, from tailored metal designs to more decorative pieces. NAPIER marks are often found on clasps, earrings, and bracelet interiors, while Hattie Carnegie pieces may include distinctive fashion-forward motifs, but both need condition review and comparison to known examples.

• Haskell clue: hand-wired beads and filigree backs rather than simple glued construction.
• Hobe clue: ornate, dimensional designs with theatrical styling.
• Napier clue: tailored metalwork, chains, cuffs, and practical fashion jewelry forms.

Later fashion and party-plan brands: Sarah Coventry, Avon, Kenneth Jay Lane, and more

Sarah Coventry jewelry is widely found because it was sold through home parties, and marks may read SARAH COV, Sarah Coventry, or SC depending on the piece. These items can be fun to collect by set or style, but most are not rare simply because they are signed.

Avon costume jewelry was produced in large quantities and often has AVON on pendants, clasps, or earring backs. Identification is usually straightforward when original packaging is present, but without packaging, the mark and design should still be checked against catalogs or reference photos.

Kenneth Jay Lane, also seen as KJL on some pieces, is associated with bold fashion jewelry and designer-inspired looks. Because popular designs can be copied, a KJL-style appearance is not the same as a confirmed Kenneth Jay Lane piece unless the mark, construction, and provenance support it.

• Mass-market signed jewelry can still be collectible when complete, clean, and in a desirable design.
• Original cards, boxes, and matching sets can help support identification.
• A famous-style design without a mark should be described as inspired by that style, not attributed to the maker.

Unsigned pieces, copied marks, and when a maker ID is uncertain

Not all collectible costume jewelry is signed. Some Juliana by DeLizza & Elster pieces, for example, are commonly identified through construction traits such as five-link bracelet construction, open-back stones, figure-eight puddling, and distinctive stone combinations, but this type of identification is best handled with specialist references.

Copied marks, fantasy marks, replaced clasps, and later repair tags can mislead beginners. If a mark looks unusually crisp on a heavily worn piece, appears on a mismatched clasp, or conflicts with the design era, treat the identification as provisional.

Professional appraisal or a hands-on review by a vintage costume jewelry specialist is appropriate for high-value rhinestone sets, suspected Miriam Haskell, unsigned Juliana-type pieces, rare figural brooches, or anything being insured or sold as a specific maker.

• Use phrases like attributed to, in the style of, or unsigned until the evidence is strong.
• Do not clean verdigris or glue aggressively before documentation.
• For resale, disclose replaced stones, missing plating, broken clasps, and uncertain marks.