The Hallmark Society
The Journal
Everything the Society has published, newest first. 55 articles on reading hallmarks, dating a piece by its era, and telling one old cut from another.
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Berlin Iron: The Jewelry of Patriots, Cast in Black
In 1813 Prussian patriots handed in their gold to fund the war against Napoleon and received iron jewelry in return, inscribed Gold gab ich für Eisen: I gave gold for iron. The black lace they wore became one of history's most literate jewelry fashions.
Berlin iron · Georgian jewelry · Materials · History
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Bohemian Garnet Jewelry: A Hundred Small Fires
The wine-dark Victorian brooches packed edge to edge with tiny red stones are Bohemian garnets: a whole Czech industry's worth of pyrope, rose-cut and massed until the metal disappears. Collectable, affordable, and full of small traps.
Bohemian garnets · Garnet · Victorian jewelry · Collecting
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Chatelaines: The Housekeeper's Toolbelt That Became High Jewelry
Before pockets served women, the chatelaine did: a decorated waist-hook raining chains, each ending in a tool, watch, scissors, thimble, scent, notebook. It was jewelry, luggage and authority in one object, and complete survivors are prizes.
Chatelaines · Victorian jewelry · Georgian jewelry · Objects of vertu
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Cut Steel Jewelry: The Sparkle That Came From a Forge
Before electric light, Europe sparkled by candle, and one of its favourite glitters was polished steel: hundreds of tiny faceted studs, each riveted by hand, flashing grey-white fire. Cut steel is jewelry from the blacksmith's family tree, and its enemies are not thieves but humidity.
Cut steel · Georgian jewelry · Victorian jewelry · Materials
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Mizpah Jewelry: One Word for Every Parting
Thousands of Victorian brooches carry one strange word: MIZPAH. It is Hebrew, it quotes a covenant of watching over the absent, and it made the era's favourite parting gift, worn by everyone with someone somewhere else.
Mizpah jewelry · Victorian jewelry · Sentimental jewelry · Collecting
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Pinchbeck: The Georgian Alloy That Fooled the Eye and Told the Truth
Christopher Pinchbeck's alloy looked like gold, wore like gold, and cost like brass, and Georgian society wore it without shame. Genuine pinchbeck is now rarer than the gold it imitated, and collectors treat it accordingly.
Pinchbeck · Georgian jewelry · Metals · Collecting
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Poison Rings: The Legend, and What the Compartments Really Held
Every compartment ring arrives with the same story: Renaissance poisoners, Lucrezia Borgia, a hinged bezel of doom. The rings are genuine and wonderful; the poison is almost entirely retrospective marketing. Here is what the little boxes really held.
Poison rings · Compartment rings · Locket rings · Collecting
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REGARD Rings: Jewelry That Spells Its Message in Stones
Georgian and Victorian lovers sent messages their jewellers set in code: ruby, emerald, garnet, amethyst, ruby, diamond. Read the first letters and the ring says REGARD. The acrostic ring is sentiment made spellable.
Acrostic jewelry · REGARD rings · Victorian jewelry · Georgian jewelry
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Scottish Agate Jewelry: The Pebbles That Conquered Victorian Britain
Queen Victoria bought Balmoral and Britain went tartan, in silver and stone as much as cloth. Scottish pebble jewelry, agates and cairngorms in strap-and-buckle silver, is one of the most recognisable Victorian genres, and one of the most faked-around-the-edges.
Scottish agate · Pebble jewelry · Victorian jewelry · Collecting
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Vinaigrettes and Scent Jewelry: Perfume as Portable Silver
Before deodorised cities, scent was carried: tiny silver boxes with pierced golden grilles, vinegar sponges inside, snapped open under assaulted noses. The vinaigrette is the most charming small silver a collector can chase, and the grille is where the artistry lives.
Vinaigrettes · Scent bottles · Objects of vertu · Silver
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British Import Marks: When Foreign Jewelry Passed Through the Hall
A British hallmark on a piece that looks nothing like British work is not a contradiction. It is an import mark, and it records the exact system built to let foreign jewelry into the British market with its metal vouched for.
British hallmarks · Import marks · Hallmarks · Dating antique jewelry
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Convention Hallmarks: The Marks That Cross Borders
In 1972 a group of European states agreed to trust each other's assay offices, and a new mark was born: fineness figures inside balance scales, valid across every member border. Any piece carrying it is talking about the modern trade era, precisely.
Convention hallmarks · Hallmarks · International trade · Modern jewelry
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Date Letters Explained: How One Stamped Letter Names a Year
A single letter, struck two millimetres tall, can name the exact year a piece passed through an assay office. It is the closest thing antique jewelry has to a birth certificate, and reading it correctly means knowing which alphabet, which office and which cycle you are looking at.
Date letters · Hallmarks · Dating antique jewelry · British hallmarks
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Fake Hallmarks: How Marks Are Forged, and How They Are Caught
The hallmark system was designed against fraud, which means fraud against the system has a long history of its own. Knowing the three ways marks are faked is most of knowing how to catch them.
Fake hallmarks · Forgery · Hallmarks · Collecting
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Gilding Through the Ages: Fire, Leaf, Vermeil and the Electric Revolution
A gold surface on a silver or base object can be five different things, made four different ways across two thousand years. Reading which gilding you are looking at dates the object and prices it, and the differences sit under any loupe.
Gilding · Vermeil · Fire gilding · Techniques
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How to Photograph a Hallmark So It Can Actually Be Read
The commonest reason a mark cannot be identified is not rarity. It is a photograph taken from too far, lit from the front, and focused on hope. The fix costs nothing and takes five minutes to learn.
Photography · Hallmarks · Identification · Practical guides
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Maker's Marks Explained: Finding the Hands Behind the Initials
Two initials in a tiny punch can turn an anonymous ring into a documented object with a workshop, a city and a span of working years. The trick is knowing that the initials were registered, and that many of the registers survive.
Maker's marks · Hallmarks · Registers · Dating antique jewelry
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Platinum Hallmarks: The Marks of the Youngest Precious Metal
The great irony of platinum is chronological: Edwardian and Art Deco jewellers built their masterpieces in it while most hallmarking law did not yet recognise it. Its marks are young, precise, and their absence is itself a date.
Platinum · Hallmarks · Art Deco · Edwardian
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Pseudo-Hallmarks: The Marks That Only Look Official
Some of the most confusing marks on antique metal were never in any assay office's books. They were struck to look official, by makers trading on the hallmark's prestige, and reading them is its own small discipline.
Pseudo-hallmarks · Hallmarks · Hanau · Silver
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Sheffield Plate vs EPNS: Two Silvers That Are Not Silver
Both wear silver faces over base hearts, and there the kinship ends. Old Sheffield plate is a Georgian craft with its own collectors; EPNS is the Victorian mass product that killed it. The copper bleeding through is the whole story.
Sheffield plate · EPNS · Silver plate · Silver
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Silver Standards Explained: Sterling, Britannia, 830 and the Rest
Silver has never had one definition. Sterling is a standard, not a synonym, and the numbers stamped on continental, Nordic and Russian silver each promise something slightly different. Reading them together is a map of Europe in fractions.
Silver · Silver standards · Hallmarks · Sterling
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The Duty Mark: How a Tax Stamp Became a Dating Tool
For just over a century, British gold and silver paid a tax at the assay office, and the receipt was a monarch's head struck beside the hallmarks. That little profile is one of the sharpest dating instruments in the entire system.
Duty marks · British hallmarks · Dating antique jewelry · History
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Watch Case Hallmarks: Dating a Watch From Its Shell
The movement gets the glamour, but the case got the hallmarks. Inside a gold or silver watch back sits a full assay row, often with a date letter, and it dates the shell to a year the movement can only envy.
Watch cases · Hallmarks · Date letters · Dating antique jewelry
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What Is an Assay Office? The Institution Behind Every Hallmark
Every hallmark is a receipt from an institution. Before the punch could be struck, someone scraped, melted or scanned the metal and staked the office's name on the result. Understanding that institution is understanding why hallmarks can be trusted at all.
Hallmarks · Assay offices · Gold · Silver
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Why Is My Jewelry Not Hallmarked? The Honest Reasons for Missing Marks
Unmarked does not mean fake, and it never has. The marking systems left deliberate gaps, exemptions, foreign trade, whole unmarked eras, and time itself erases punches. What matters is knowing which gap your piece fell through.
Hallmarks · Unmarked jewelry · Authentication · Dating antique jewelry
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Early Plastics in Jewelry: Celluloid, Bakelite, Casein and Their Tests
The first plastics were not cheap substitutes but wonder materials, and Bakelite bangles now outsell the gold ones beside them. Identifying celluloid, casein and Bakelite is scent-and-sound detective work, and the market pays for getting it right.
Bakelite · Celluloid · Early plastics · Identification
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Essex Crystal: The Reverse Intaglio That Paints in Depth
Look into a Victorian Essex crystal and a tiny fox terrier looks back, floating inside the stone in full three dimensions. The trick is an intaglio carved and painted from behind, and the genre is one of Victorian jewelry's most delightful dead ends.
Essex crystal · Reverse intaglio · Victorian jewelry · Rock crystal
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Paste Jewelry: The Glass That Was Never Ashamed of Itself
Paste is not fake diamond. It is glass, cut and foiled by hand for candlelight, worn openly by people who could afford diamonds and often preferred the glass. Old paste is a legitimate jewel with its own connoisseurship.
Paste jewelry · Georgian jewelry · Victorian jewelry · Stones
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Repoussé and Chasing: Drawing on Metal With a Hammer
Nearly every raised flower, scroll and figure on antique metal was made by two hammers working opposite sides of the same sheet. Repoussé and chasing are the yin and yang of metal relief, and telling hand work from stamping is a core collector skill.
Repoussé · Chasing · Techniques · Silver
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Tortoiseshell and Piqué: Beauty, Craft, and the Law Around Both
The amber-and-brown mottled combs and gold-starred piqué brooches of Victorian dressing tables are hawksbill shell, a material now rightly fenced by law. Collectors need both skills: telling real shell from its imitations, and knowing what the rules allow.
Tortoiseshell · Piqué · Victorian jewelry · Identification
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What Is an Intaglio? The Carving That Prints
Press an intaglio into wax and it prints its image in relief: it is a sculpture in negative, made to sign documents before signatures existed, and collected for two thousand years.
Intaglios · Engraved gems · Seals · Collecting
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What Is Granulation? Gold Dust Frozen in Place
The Etruscans covered gold with thousands of near-microscopic beads, each attached without visible solder, and then the knowledge vanished for two millennia. Granulation is jewelry's most famous lost-and-found technique.
Granulation · Etruscan revival · Goldsmithing · Techniques
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What Is Guilloché? Engine-Turned Patterns Under Glass-Clear Enamel
Those hypnotic engraved waves and sunbursts under coloured translucent enamel were cut by hand-guided machines called rose engines, and the technique's name, guilloché, covers some of the most luminous surfaces in antique jewelry.
Guilloché · Engine turning · Enamel · Fabergé
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What Is Marcasite? The Sparkle That Is Actually Pyrite
The tiny steel-grey stones glittering from old silver are pyrite wearing a borrowed name. Marcasite is honest sparkle three centuries old, and its settings, eras and imitations are all readable.
Marcasite · Pyrite · Silver jewelry · Art Deco
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What Is Niello? The Black That Is Not Enamel
The deep black inlay on Russian silver cigarette cases and Siamese bracelets is neither enamel nor tarnish. It is niello, a fused metal-sulphide with its own two-thousand-year history and its own collecting field.
Niello · Silver · Russian silver · Techniques
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Whitby Jet: How to Know the Real Black From All the Others
Victorian mourning made black jewelry an industry, and the industry made substitutes. Telling Whitby jet from French jet, vulcanite and bog oak is the defining skill of the genre, and it takes warmth, weight and a loupe.
Whitby jet · Jet · Mourning jewelry · Victorian jewelry
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French Hallmarks: How to Read the Smallest Marks in Europe
France never used a date letter, which is why people assume French pieces cannot be dated. They are wrong. France changed its guarantee marks at datable moments, and two marks read together will often bracket a piece to twenty years or less.
French hallmarks · Hallmarks · Dating antique jewelry · Gold
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Which Countries Actually Hallmark, and Which Only Pretend To
You can only look up a mark if somebody kept a register. That single fact explains why one country's jewelry gives up its year in seconds and another's will never tell you anything at all, however good your reference books are.
Hallmarking systems · Assay offices · Maker marks · Date letters
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What Is My Antique Jewelry Worth?
Every piece of jewelry has four different values at the same time, and most disappointment comes from being quoted one and expecting another. Here is what actually drives the number, and how to find out where your piece sits before anyone makes you an offer.
Valuation · Selling jewelry · Melt value · Appraisal
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You Have Inherited a Box of Jewelry. Now What?
The box arrives with no documentation, several generations mixed together and at least one thing nobody can identify. There is a sensible order to work through it, and two irreversible mistakes to avoid before you start.
Inherited jewelry · Sorting · Cleaning · Selling
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Antique or Vintage? What the Words Actually Mean
Two words, used interchangeably by almost everyone selling jewelry and precisely by almost everyone buying it. The difference is not pedantry. It changes what customs charges, what an insurer accepts and what a description is claiming.
Antique jewelry · Vintage jewelry · Definitions
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Art Deco Jewelry: How to Tell Real from Reproduction
Art Deco is the most reproduced style in the history of jewelry, which means most pieces described as Deco were made decades after the period ended. The genuine article is identifiable, and the tells are all in construction rather than design.
Art Deco · Platinum · Calibre cut · Reproduction
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Art Nouveau Jewelry: The Twenty Years Everything Curved
For twenty years jewelry stopped being about the value of its materials and started being about what it looked like. Horn, glass and enamel were used in preference to diamonds. It did not last, it was never commercially large, and almost everything you see described as Art Nouveau was made after 1970.
Art Nouveau · Plique-a-jour · Enamel · Lalique
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Edwardian Jewelry: Platinum, Millegrain and the Garland Style
For about fifteen years jewelry tried to look like lace. It could only try because a new metal had arrived: platinum, strong enough to hold a diamond in a claw so fine it almost disappears. Everything else about the period follows from that one fact.
Edwardian jewelry · Belle Epoque · Platinum · Millegrain
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Georgian Jewelry: What Survives, and How to Know It
A hundred and twenty three years of jewelry made entirely by hand, in a world lit by candles, before anyone had invented a machine that could help. Very little of it survives, most of what does has been altered, and almost all of it can be ruined in a sink of warm water.
Georgian jewelry · Foiled stones · Closed back · Rose cut
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How to Date Antique Jewelry: The Method Dealers Actually Use
You can get surprisingly far with no equipment at all. Jewelry is made of fashion, technology and materials, and all three changed at moments we can date. Here is the order to work in and, more importantly, what each clue is really worth.
Dating antique jewelry · Jewelry eras · Findings · Hallmarks
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Retro Jewelry: What Wartime Scarcity Made
For fifteen years jewelry got large, golden and architectural. It was not a change of taste so much as a change of supply: platinum was requisitioned for the war, good stones were unobtainable, and designers made scale do the work that materials used to do.
Retro jewelry · Rose gold · Cocktail rings · 1940s
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Victorian Jewelry: How to Recognise the Three Periods
Sixty four years is too long to be a style. Victoria came to the throne when jewelry was still made one piece at a time by hand, and died when it was being stamped out by machine in Birmingham by the thousand. The period divides into three, and the divisions are visible.
Victorian jewelry · Mourning jewelry · Jet · Gold
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How to Read Hallmarks on Gold and Silver
A hallmark is the closest thing jewelry has to a birth certificate. It can give you the metal, the standard, the city and, in Britain and Scandinavia, the exact year. It can also be entirely absent from a perfectly genuine antique, which is why knowing what a mark cannot tell you matters as much as knowing what it can.
Hallmarks · Assay offices · Fineness · Date letters
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How to Tell If Gold Is Real: Seven Tests, Ranked
A stamp is a claim, not a fact. Here are the tests in order of how much they prove and how much damage they do, starting with the ones that cost nothing and ending with the one that settles it.
Testing gold · Fake gold · Acid test · XRF
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What 375, 585, 750 and 925 Mean on Jewelry
A number stamped on metal is the most common mark in jewelry and the most commonly misread. It is not a date, not a weight and not a guarantee of quality. It is one thing only: how much of the alloy is precious metal, counted in parts per thousand.
Fineness · Carat · Gold marks · Silver marks
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Every Diamond Cut, in the Order It Was Invented
Cutting is a technology, and like every technology it advanced when the tools did. Read these in order and you are reading five hundred years of what a workshop was physically able to do, which is why the cut of a stone dates the jewelry around it.
Diamond cuts · Cutting history · Old cuts · Step cuts
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Fancy Shapes: Marquise, Pear, Oval, Briolette and Cabochon
Round is the shape that wastes the most rough and returns the most light. Everything else on this page exists because a cutter looked at an awkward crystal and decided that keeping the weight mattered more than following the rules.
Marquise · Pear cut · Oval · Briolette
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Old Cut Diamonds: Mine, European, Transitional and Rose
Every facet on a diamond cut before about 1900 was placed by hand, judged by eye, against a wheel turned by a foot treadle, in a room lit by daylight and candles. The cuts that resulted are not worse than modern ones. They were cut for a different room.
Old mine cut · Old European cut · Rose cut · Diamond cutting
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Step Cuts: Emerald, Asscher, Baguette and Carre
A brilliant hides a stone's faults behind sparkle. A step cut does the opposite: it opens a window straight down into the material and dares you to look. That honesty is why the trade respects them and why they are so much harder to buy well.
Emerald cut · Asscher cut · Baguette · Calibre cut