Identify Antique Jewelry by Era, Setting and Stone

Construction dates a piece; style only suggests a date

The most useful fact about antique jewelry is that the workshop moved faster than the fashion. Metals, settings, clasps and cutting wheels each changed at a known moment, and a jeweler in 1880 could not use a fitting that would not be invented until 1905. Style, by contrast, was revived constantly. The Victorians revived Etruscan granulation, the 1920s revived Egypt, the 1970s revived Art Nouveau, and every decade since has revived Art Deco.

So read the piece in this order, and let each step narrow the last. Construction first, because it is a hard boundary. Stones second, because cuts belong to date ranges. Style third, as confirmation rather than as proof. Worked that way, most pieces settle into a twenty or thirty year window from a photograph of the front and one of the back.

The eras and their signatures

Seven windows cover almost everything you will handle. Read the table across a row, then read the two or three sentences below on whichever row your piece is closest to.

Georgian

Georgian jewelry was made entirely by hand, and it shows in the best way. Look for closed backs, where each stone sits in a sealed metal cup over a layer of foil that pushed color back through the gem before electric light existed. Rose cut and old mine cut diamonds sit in silver collets even when the rest of the piece is gold, because silver read whiter by candlelight. Matching elements never match exactly. If a brooch has a safety catch, it was added later.

Victorian mourning and sentimental work

The Victorian period runs long enough to need splitting into three. The early years are delicate and romantic: seed pearls, snake motifs, cabochon garnets, hollow repoussé gold that feels lighter than it looks. The middle years are the mourning and archaeological revival era, in jet, black enamel, onyx and woven hair, alongside heavy Etruscan revival gold covered in granulation. The late years turn light and silvery: bar brooches, star and crescent motifs, small diamonds in star settings.

Sentimental jewelry is its own vocabulary and worth learning, because it changes what a piece is. A glazed compartment on the reverse held hair or a miniature. An engraved date and initials inside a band puts a name to the piece. Acrostic settings spell a word through the first letters of the gems, so ruby, emerald, garnet, amethyst, ruby and diamond reads as a word rather than as a random palette.

Art Nouveau and Edwardian

These two overlap in time and oppose each other completely in character, which makes them easy to separate. Art Nouveau is asymmetric, colorful and made of whatever produced the effect, with enamel doing most of the work and horn, glass and moonstone treated as equal to diamond. Edwardian is symmetrical, white and made of platinum, worked into lace: pierced openwork panels, milgrain beading running along every edge, knife edge wires that nearly disappear. If a piece is white, delicate and covered in tiny beaded edging, it is Edwardian or made in the Edwardian manner.

Art Deco, Retro and mid century

Art Deco is geometry with a hard edge: platinum plaques, calibre cut colored stones fitted like tiles, baguettes, onyx against diamond, mirror symmetry. Retro reverses almost all of it. With platinum diverted to the war effort, gold came back in rose and yellow, and volume replaced precision: broad scrolls, ribbon bows, gas pipe links, and huge pale gemstones cut to fill space. Mid century brings the white metals back for sprays and starbursts and adds the illusion setting, a shaped white head that makes a modest diamond look considerably bigger.

Settings as evidence

A setting has a job, and how it does that job dates it precisely.

• Closed back and foiled. The stone sits in a sealed cup with foil behind it. Georgian into the early Victorian years, and a firm sign of pre 1850 work.
• Collet and cut down. A band of metal wrapped around the stone and worked down over its edge. Georgian and Victorian.
• Open claw or prong. Metal fingers holding the stone with the back left open so light passes through. General after about 1850 and standard by the 1870s.
• Star and gypsy settings. The stone dropped flush into the metal, with an engraved star radiating from it. Late Victorian.
• Milgrain and pierced galleries. Fine beaded edging and lacework cut out behind the stones. Edwardian.
• Channel and calibre. Stones cut to shape and set shoulder to shoulder between two walls of metal. Art Deco onward.
• Illusion settings. A faceted white metal collar around a small stone to widen its apparent size. Mid century.

One more distinction is worth training your eye on: fabricated versus cast. A hand fabricated piece was assembled from separately made parts, so you can find solder seams, faint file marks and slight differences between elements that should be twins. A cast piece came out of a mold in one go, so the surface can be very slightly grainy, and there may be a faint seam or the ghost of a sprue where metal entered. Casting in volume belongs to the twentieth century.

Closures and findings, the fastest date in jewelry

Findings are the small mechanical parts, and they are the single most efficient thing to look at because they were manufactured rather than designed. Each one entered use at a known point.

• C-clasp. An open hook with nothing holding the pin in. Nineteenth century into the very early twentieth.
• A pin stem longer than the brooch. The stem extending well past the frame belongs to pre 1900 dress, where it had to cross thick fabric.
• Trombone clasp. A tube that pulls out from a cylinder to free the pin. Largely European, about 1850 into the 1930s.
• Rotating safety catch. A collar that turns over the pin to lock it. From about 1900, standard from the 1920s.
• Hinges. A hinge built from soldered tubes is earlier. Stamped and riveted hinges are later and machine made.
• Earring fittings. Shepherd hooks and kidney wires are early. Screw backs run from the 1890s to the 1940s, clip backs from about 1930, and posts with butterfly backs from the 1950s.

Findings do get replaced, and a replacement is easy to spot: the solder is brighter, the metal color is slightly off, and the fitting looks newer than everything around it. Read it as a repair rather than as a date, and let the rest of the construction rule.

Cut styles as a date range

Diamond cutting improved steadily, so a cut is a clock. Look straight down through the table at the bottom of the stone.

• Rose cut. Flat back, domed top, triangular facets. Sixteenth century onward, and used throughout Georgian and Victorian work.
• Old mine cut. Squarish cushion outline, high crown, small table, and a large open culet that shows as a clear circle at the center. About 1750 to 1900.
• Old European cut. Round outline with the same high crown, small table and open culet. About 1890 to 1930.
• Transitional cut. Round, with a bigger table and a small culet. The 1920s to the 1940s.
• Modern round brilliant. Large table, shallow crown, pointed culet with nothing visible through the middle. From the 1940s.
• Single or eight cut. Eight crown facets on a small stone, used by the dozen in Art Deco pieces.
• Baguette, emerald and calibre cuts. Step cut rectangles, from the Art Deco period onward.

The open culet is the fastest of these to use. If you can see a small circle where the point of the stone should be, the diamond was almost certainly cut before about 1930, and a diamond of that age in an original mounting carries a premium over the same weight recut to modern proportions.

What to look at on the back

Turn every piece over. The reverse is the workshop drawing, and it answers questions the front cannot.

• Whether the settings are open or closed. Light through the back is later work. Sealed cups are earlier.
• Solder seams and color shifts. A slightly different gold tone at a joint is where two hand made parts met.
• Signs of conversion. Solder scars where a pin assembly was removed, or an added bail on a brooch, mean the piece has been converted to a pendant. That is common and it changes the value.
• Compartments and glazing. A glazed locket back or a hair compartment tells you the piece is sentimental or mourning jewelry.
• Wear in the right places. Genuine age wears the high points and leaves the recesses crisp. Even wear everywhere, or crisp high points with dirty recesses, is worth a second look.
• Inscriptions. Dates, initials and mottoes inside a band or on the reverse of a brooch are the best provenance a small object can carry.

How to photograph jewelry

Small objects need a different discipline from large ones, and three adjustments cover most of it.

• Diffuse the light. Daylight through a thin curtain, a sheet of paper or a white bag turns the hard glints on polished metal into readable highlights. Direct sun and flash both bleach detail away.
• Get close, and hold still. Use the nearest focus your lens manages, brace the phone against a book or a table edge, and prop the piece at a slight angle so light rakes across the surface rather than reflecting into the lens.
• Choose the ground for the metal. Silver and platinum read best against mid gray or a dark plain surface. Jet, onyx and dark enamel need a pale one. Patterned cloth competes with the piece and helps nothing.
• Shoot the back as a second frame, filling it with the clasp, the hinge and the gallery. That frame is where the date lives.
• Put a coin in the picture. A brooch two inches across and one four inches across look identical alone, and they are not worth the same.

The wider photography rules for every category are set out on our identify antiques by photo page.

What comes back, and how to use it

A report gives you a reference value with a low and a high estimate, a rarity read on five levels from common to exceptional, a condition grade on five levels from poor to excellent, the likely period, origin and materials, the category the piece falls into, a written summary and history, and comparable listings that open in your browser.

For jewelry, put the period beside the findings you have just examined. When the report says Edwardian and the back shows milgrain, a pierced gallery and platinum, those two agree and the range is standing on firm ground. Then open the comparables and check they are the same era in the same metal with stones cut the same way, because a mounting of the right period is a large part of the price. How the estimate is produced is set out on our methodology page, and free antique appraisal options covers the other routes worth running alongside it.