Nearly two carats held by almost nothing - which is precisely the point of platinum. An Art Deco diamond ring from the 1930s, the metal's finest hour.
Platinum is the strongest metal ever used in fine jewelry, and for about forty glorious years - roughly 1900 to 1940 - it changed what jewelry could look like. Because platinum is so strong, a setting could be drawn out into threads as fine as lace and still hold a diamond securely for a century. Every airy Edwardian garland and every crisp Art Deco geometry you have ever admired exists because of this one property.
Why jewelers fell in love with it
Strength without bulk. A gold prong needs meat to be safe; a platinum prong the width of a hair will hold. That is why antique platinum settings look impossibly delicate and almost never lose their stones.
Truly white, and it stays white. Platinum is naturally white through and through. It is not plated, so unlike white gold it never needs rhodium and never develops a yellow tint. It also does not tarnish at all.
It wears differently. When gold is scratched, a sliver of metal is removed. When platinum is scratched, the metal is displaced rather than lost - it develops a soft, satiny surface called patina, and a hundred-year-old platinum ring still weighs what it did on day one.
Platinum through the eras
| Period | What happened |
|---|---|
| Before 1900 | Rare in jewelry - jewelers could not reach the melting point. Diamonds sat in silver-topped gold instead |
| 1900-1915 (Edwardian) | New torches made platinum workable, and the lace-like garland style exploded. The great platinum era begins |
| 1920s-1930s (Art Deco) | Platinum's geometry years: knife-edge bands, calibré-cut stones, white-on-white glamour |
| 1940s (war) | Declared a strategic metal and banned from jewelry in several countries. Gold takes over, and the Retro style is born |
| After 1950 | Returns slowly, mostly in engagement rings. The pre-war handwork was never repeated at the same level |
Platinum on the front for the diamonds, gold on the back for warmth and cost - the classic Edwardian recipe, here in a brooch turned pendant.
How to recognize antique platinum
Look for the marks. PLAT, PT, PLATINE or 950 are the common stamps, though very early pieces are sometimes unmarked. Many Edwardian pieces are platinum-topped gold: platinum where the diamonds sit, 18K gold underneath - look at the piece from the side and you will see the colour change.
Feel the weight. Platinum is significantly denser than gold. A platinum ring feels noticeably heavier than the same ring in white gold, and once you have handled both you will never confuse them again.
Check the colour of the wear. White gold that has lost its rhodium shows faintly yellow in the worn spots. Platinum stays the same grey-white everywhere, just softer in sheen where it has been worn.
Living with it
Platinum asks almost nothing of you. It does not tarnish, it is kind to sensitive skin, and its patina is considered part of its beauty - many collectors specifically ask us not to polish it away. If you prefer mirror-bright, any jeweler can restore the shine in minutes. The one real caution is the settings, not the metal: those lace-fine antique galleries deserve a gentle hand and an occasional check that the tiny prongs still grip.
Frequently asked questions
When was platinum first used in jewelry?
In earnest from around 1900, when new torch technology finally let jewelers reach its high melting point. The Edwardian and Art Deco decades were its golden age.
How can I tell if my antique ring is platinum?
Look for PLAT, PT or 950 stamps, feel the weight - platinum is much denser than gold - and check that worn areas show no yellow tint. When in doubt, a dealer with an XRF tester can tell you in seconds, non-destructively.
Does platinum tarnish or fade?
No. It is naturally white all the way through, needs no rhodium plating, and never tarnishes. It only develops a soft patina from wear, which polishing can remove if you prefer.
Why do Edwardian pieces combine platinum and gold?
Platinum was extremely expensive, so jewelers used it only where it mattered - around the diamonds - and built the back and structure in 18K gold. The combination is a hallmark of the era, not a compromise.
Why did platinum disappear in the 1940s?
It was declared a strategic war metal and banned from civilian jewelry in several countries. Jewelers switched to gold, which is a large part of why 1940s Retro jewelry is so golden.
Is antique platinum jewelry a good buy?
Yes, particularly Edwardian and Art Deco pieces. The handwork in them was never repeated after the war, the settings hold their stones superbly, and the metal itself is rarer than gold.
Read next: What is Edwardian jewelry? · White gold vs yellow gold · What is Art Deco jewelry?
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