Gold Purity Explained: 10K, 14K, 18K, 22K & 24K
5 min read · By the Regal Jewels team
What karat numbers really mean, how purity affects color, durability and price, and which karat suits everyday wear versus bridal jewelry.
What does karat mean?
Karat (K) measures how much pure gold is in a piece of jewelry, out of 24 parts. 24K is essentially pure gold (99.9%). 22K contains about 91.6% gold, 18K about 75%, 14K about 58.3%, and 10K about 41.7%. The remaining metal is an alloy — usually copper, silver or zinc — added for strength and color.
How purity changes the jewelry
Higher-karat gold has a deeper, warmer yellow tone and greater intrinsic value, but it is softer. 22K is the traditional choice for South Asian bridal sets, bangles and chains because of its rich color and strong resale value. 18K balances luxury with durability and is common in diamond settings, since the firmer alloy holds stones securely. 14K is the most scratch-resistant choice for daily-wear rings and bracelets.
Which karat should you choose?
For heirloom and bridal pieces where gold value matters most, choose 22K. For diamond jewelry and engagement rings, 18K or 14K settings protect the stones better. For investment, 24K bullion coins and bars carry the highest purity. At Regal Jewels in Chicago we carry 18K, 22K and 24K gold, and our team can weigh and explain any piece before you buy.
How gold jewelry is priced
Gold jewelry pricing is based on the day's gold rate multiplied by the item's weight in grams, plus craftsmanship. That is why identical-looking chains can differ in price — the weight and purity differ. Always ask for the gram weight and karat, which we list on every product.
Still have questions?
Our jewelers answer questions every day — in store on Devon Avenue, or on WhatsApp.