Identifying Antique Jewelry

Start with metal purity marks

Purity marks are often the fastest clue when identifying antique jewelry. Gold numbers are parts per thousand: 375 is 9k, 585 is 14k, 750 is 18k, and 916 is 22k. Older British jewelry may use 9ct, 12ct, 15ct, 18ct, or 22ct, and 15ct is a useful dating clue because it was discontinued in Britain in 1932.

Sterling silver is commonly marked 925, but British silver jewelry may show traditional hallmarks such as the lion passant instead of a simple number. If your main puzzle is a silver mark, use the deeper guide at silver hallmark identification after you photograph the mark clearly.

Be careful with lookalike marks. A stamp such as 1/20 12K GF means gold-filled, not solid 12k gold, and PLATED is very different from PLAT. For initials, symbols, or cartouches near a purity mark, the next step is often a maker mark identifier app or a close comparison of the partial stamp.

Photograph tiny maker’s marks clearly

Most jewelry marks hide in practical places: inside a ring shank, on a bracelet clasp, along a brooch pin stem, on the back of a pendant, on an earring post, or on the jump ring near a necklace clasp. A 10x loupe, bright side light, and a steady phone camera can reveal details that are invisible in a normal photo.

Maker’s marks may be full names, initials, symbols, or small shaped cartouches. Famous names such as Tiffany & Co., Cartier, Georg Jensen, Boucheron, Krementz, Trifari, and Miriam Haskell are worth checking carefully, but unsigned quality jewelry also exists, especially before 1900. If only part of a stamp remains, compare it with partial maker mark identification instead of forcing an exact match too early.

Take one straight-on photo of the mark and one angled photo with raking light. Worn stamps can mislead: 18 can look like 13, 750 can look like 150, and PLAT can be confused with PLATED. For a broader photo workflow across many object types, see identify antique from photo, then return to the jewelry-specific clues on this page.

Date jewelry by era, design, and construction

Era clues are strongest when style and construction agree. Georgian jewelry, roughly 1714 to 1830, often has closed-back settings, foil-backed stones, handmade collets, and silver over gold. A ring that looks Georgian from the front but has a modern open back, a machine-perfect shank, and new solder may be a later alteration or revival.

Victorian jewelry from 1837 to 1901 ranges from romantic motifs such as hands, hearts, flowers, snakes, and lockets to mourning pieces with black enamel, jet, hairwork, or inscriptions. Edwardian jewelry, about 1901 to 1915, often favors platinum, garlands, bows, millegrain edges, and lacy diamond work.

Art Nouveau pieces, around 1890 to 1910, may show flowing women, orchids, dragonflies, and enamel. Art Deco, 1920 to 1939, is more geometric, often with calibré sapphires, emeralds, rubies, onyx, and old European diamonds; for that specific look, use art deco jewelry identification. Retro jewelry from the late 1930s through about 1950 often brings rose gold, scrolls, tank bracelets, and synthetic rubies.

This page focuses on marks, clasps, cuts, and construction clues rather than general shopping or app choice. For the broader app-focused guide, read vintage jewelry identification app as deeper reading.

Use clasps, stone cuts, and repairs as cross-checks

Clasps and findings can support or challenge the date suggested by a mark. Older brooches often have a simple C-clasp with no safety catch and a pin stem that extends beyond the edge; tube hinges and long pins usually suggest earlier construction than modern round safety clasps. Necklace spring rings appear in the late 19th century, while lobster clasps usually point to later 20th-century replacement or a non-original chain.

Earring backs also matter. Screw backs became common from the 1890s and remained popular through the 1950s, while clip backs appear widely in the 1930s. Pierced posts can be original on some older earrings, but they are also frequent later additions, especially when paired with mismatched solder or disturbed plating.

Gemstone cuts add another layer. Old mine cut diamonds have cushion outlines, high crowns, small tables, and large open culets; old European cuts are rounder and common from about 1890 to 1930. Rose cuts have flat backs with domed triangular facets, while modern round brilliants with tiny or absent culets usually suggest a later stone or reset.

Finally, inspect repairs and conversions. Watch chains become bracelets, stickpins become rings, brooches become pendants, and clip earrings gain posts. Bright or lead-gray solder, extra holes, filed-off hinges, a bail soldered over engraving, or a chain that does not match the pendant can all change value and dating confidence.