14K vs 18K Gold

What the karat number means

Karat measures how much of an alloy is pure gold, in 24ths. 24K is pure gold, which is too soft for most jewelry. 18K is 18 parts gold in 24, or 75%, and is stamped 750. 14K is 14 parts in 24, about 58.3%; it is usually stamped 585 because alloys are made slightly above the minimum. 10K is 41.7% gold, stamped 417, the lowest karat that can be sold as gold in the United States.

The rest of the alloy is other metals, usually silver, copper, and zinc, with palladium or nickel in some white golds. Those metals are what give gold its hardness and its color.

Color

More gold means a deeper, warmer yellow. 18K yellow gold has a rich color that reads as noticeably golden next to 14K, which is a little paler. 10K is paler again. In rose gold, the karat changes how pink the metal looks, since copper supplies the color.

White gold of any karat is usually plated with rhodium for a bright white finish, so 14K and 18K white gold look alike when new. As the plating wears, 18K white gold can show a warmer tone underneath sooner. See yellow vs white vs rose gold for more on color.

Hardness and daily wear

Pure gold is soft, so the alloy metals are what make jewelry durable. 14K gold is harder than 18K and resists scratches and dents better, which is why it is the most popular karat for fine jewelry in the United States and the usual choice for rings worn every day.

18K gold is still durable, but it rewards more care: prongs and thin bands wear faster, and polished surfaces pick up fine scratches sooner. 10K is the hardest of the three and the most scratch-resistant, with the lightest color.

Sensitive skin

Reactions to gold jewelry usually come from the alloy metals, most often nickel in some white gold alloys, not from gold itself. Higher karat means less alloy, so 18K yellow gold is often the easiest to wear for sensitive skin, with 14K yellow gold close behind.

If you know you react to a specific metal, contact us before you order and we will check the alloy for the option you want. Platinum is another option for sensitive skin; see platinum vs gold.

Price and weight

Gold content drives price. An 18K version of a style contains more gold than the 14K version and costs more, and 18K alloys are slightly denser, so the same design weighs a little more.

Because most of a fine piece's cost is metal and labor, karat can move the price of a chain or a plain band more than any other choice. For diamond jewelry, the stones usually matter more to the price than the karat of the setting.

Which karat for which piece

For rings worn every day, especially engagement rings and wedding bands, 14K gives the best balance of color and durability. 18K suits pieces that see less friction, such as earrings, pendants, and occasional rings, or anyone who wants the deepest yellow.

For chains, both work; 14K is tougher on thin links, and 18K gives a richer color on heavier chains. 10K is a practical, affordable choice for everyday rings and men's jewelry that sees hard wear.

Gold-filled, plated, and vermeil are different

Solid gold means the karat alloy goes all the way through. Gold-filled metal bonds a thick layer of karat gold to a brass core; under U.S. rules the gold must be at least one-twentieth of the total weight. Gold vermeil is sterling silver with a gold layer at least 10K and 2.5 microns thick. Gold-plated metal has a much thinner layer over a base metal.

All of these are clearly named on product pages. Filled, vermeil, and plated pieces can look like solid gold at a lower price, but their gold layer can wear with time, and they are counted apart from solid gold in our listings.

What the catalog lists

Most gold pieces in the catalog are 14K, with 18K and 10K offered where a style is made in them. When a style comes in more than one karat or color, each is a separate option with its own price, so you can compare them on the same page.

Browse yellow gold chains, white gold chains, yellow gold engagement rings, and wedding bands. Care for each karat is covered in our jewelry care and cleaning guide.

Common questions

Is 14K gold real gold? Yes. It is a solid gold alloy, 14 parts pure gold in 24 all the way through, with other metals added for strength and color. It is not plated or filled.

Does 14K gold tarnish? Karat gold does not rust, and 14K and 18K gold keep their color in normal wear. Lotion and soap film can dull the surface, and lower karats such as 10K can darken very slightly over time because they contain more alloy metal; warm soapy water brings the shine back.

Can I shower with gold jewelry? Water does not harm solid gold, but soap film dulls it and hides the sparkle of any stones, and chlorine in pools and hot tubs can weaken gold alloys over time. Take it off to swim and bathe when you can.

Is 18K worth the extra cost? It is if you want the deepest yellow color, or if you have sensitive skin and do well with higher-purity gold. For a ring that takes daily knocks, 14K usually wears better for the money.

What about 22K and 24K gold? They are richer in color and softer still, which is why they are rare in everyday Western fine jewelry; they are traditional in some cultures for pieces worn for occasions.

How can I tell what karat a piece is? Look for the stamp inside a ring band or on a clasp tag: 10K or 417, 14K or 585, 18K or 750. A magnet is not a reliable test on its own, and a jeweler can confirm a stamp with a quick acid or electronic test.