585 / 14K Gold — What This Hallmark Means

A "585" stamp signifies 14-karat gold, composed of 58.5% pure gold and 41.5% other alloying metals such as copper, silver, nickel, or zinc. In the karat system, 14 out of 24 parts are pure gold, which translates to approximately 58.3% — rounded up to 585 parts per thousand in the metric fineness system. This gold purity is by far the most widely used for jewelry in the United States and is increasingly popular in other markets.

14K gold offers an outstanding combination of durability, color, and value. With a higher proportion of alloying metals than 18K gold, it's significantly more resistant to scratches, dents, and wear — making it an ideal choice for engagement rings, wedding bands, and other jewelry meant to be worn daily. At the same time, it retains enough gold content to display a warm, attractive color.

Like 18K gold, 14K comes in yellow, white, and rose varieties depending on the alloy composition. 14K white gold typically contains nickel or palladium and is often rhodium-plated for brightness. 14K rose gold uses a higher copper ratio to achieve its pinkish hue. All three variants share the same 58.5% gold content.

The 585 or 14K stamp is found in the same locations as other gold purity marks. On rings, check the inside of the band. For chains and necklaces, examine the clasp or the small tag near the clasp. Bracelet marks are usually on or near the clasp mechanism. Earring marks appear on the post, back, or clip.

American jewelry most commonly uses "14K" or "14KT," while European pieces favor the "585" numerical designation. You may also find both marks present on the same piece, especially on internationally marketed jewelry.

Common variations include "585," "14K," "14KT," "14CT," ".585," and "14KP" (the "P" stands for "plumb," meaning the piece contains exactly 14K of gold, not less). Some European countries use regional assay marks alongside the 585 stamp.

Be cautious of marks like "14K GF" (gold-filled), "14K GE" (gold electroplate), "14K HGE" (heavy gold electroplate), or "14K RGP" (rolled gold plate). These all indicate that the item is NOT solid 14K gold but rather a base metal with a gold coating or layer.

Many people believe that 14K gold is "low quality" compared to 18K or 24K. In reality, 14K gold is often a superior choice for jewelry because its higher alloy content makes it stronger and more scratch-resistant. The gold is real and valuable — it simply contains more strengthening metals.

Another misconception is that 14K gold causes allergic reactions more than higher-karat gold. While it's true that 14K white gold may contain nickel (a common allergen), 14K yellow gold typically doesn't cause more reactions than higher-karat varieties. People with nickel allergies should specifically avoid nickel-containing white gold alloys, not all 14K gold.

If you've identified a 585 or 14K mark on your jewelry, you have a solid gold piece that represents excellent value. For verification, a jeweler can test the gold purity using acid tests or electronic analyzers. This is especially worthwhile for pieces purchased secondhand or from unfamiliar sources.

Care for 14K gold by cleaning it with warm water and mild dish soap, using a soft-bristled brush for textured areas. Although 14K gold is more durable than higher-karat options, it should still be stored separately from harder materials like diamonds that could scratch the surface.