14K vs 18K vs 22K vs 24K Gold: Purity, Price & Which to Buy

The difference between 14K, 18K, 22K and 24K gold is purity: 14K is 58.5% gold, 18K is 75%, 22K is 91.6% and 24K is 99.9%. More gold means a richer colour and higher value per gram, but a softer metal. That is why 24K is used for coins, bars and digital gold, while 22K, 18K and 14K are alloyed for jewellery.

This guide explains what is carat in gold, the 18 carat and 22 carat gold purity percentage, the difference between 22K and 24K gold, and which one fits your purpose.

What is carat in gold?

Carat, written K or kt, measures how many parts out of 24 are pure gold. Pure gold is too soft to hold a shape, so jewellers mix it with copper, silver or zinc. The hallmark number is the same ratio expressed in parts per thousand, which is why 22K is stamped 916 and 18K is stamped 750.

• 24K = 24/24 parts gold = 99.9%

• 22K = 22/24 = 91.6%

• 18K = 18/24 = 75%

• 14K = 14/24 = 58.5%

So when someone asks what is carat in gold, the answer is a fraction out of 24. Carat for gold purity is unrelated to carat for gemstone weight; the spelling overlap is a historical accident.

24K gold: the purest form

24K gold contains 99.9% gold with almost no alloy. It has the deepest yellow colour and the highest gold content per gram, but it bends and scratches easily, so it is rarely used for jewellery.

• Strengths: maximum purity, priced on metal content, easiest to sell

• Limitations: too soft for daily wear, highest price per gram

• Best for: coins, bars and digital gold, where you pay for metal rather than craftsmanship

22K gold: the Indian jewellery standard

The 22 carat gold purity percentage is 91.6%: 22 parts gold and 2 parts alloy. It keeps the bright traditional yellow Indian buyers expect while being just workable enough for ornaments. The 916 hallmark you see on Indian jewellery is simply the 22 carat gold purity percentage expressed in parts per thousand.

• Strengths: high purity, strong resale on metal value, classic colour

• Limitations: softer than 18K, unsuitable for heavy stone settings

• Best for: wedding sets, bangles, chains, temple jewellery

18K gold: purity percentage, price and uses

The 18 carat gold purity percentage is 75%: 18 parts gold and 6 parts alloy, hallmarked 750. It holds fine detail and gemstones securely, which is why most designer and international jewellery is 18K. You may see 18kt gold purity marked with a "kt" suffix on imported pieces; the purity of 18 carat gold is identical whether stamped 18K, 18kt or 750.

• Strengths: durable, rich colour, hypoallergenic options

• Limitations: costs more than 14K, resale below 22K

• Best for: engagement rings, diamond settings, designer pieces

Because the purity of 18 carat gold is three-quarters metal, the 18 carat gold price today is roughly 75% of the pure 24K rate plus making charges. That is why 18K always costs less per gram than 22K or 24K for the same weight. You can work it out from today's 24K rate.

14K gold: affordable and hard-wearing

14K gold is 58.5% gold and 41.5% alloy, hallmarked 585. It is the toughest and cheapest of the four, with a lighter yellow tone.

• Strengths: very durable, budget-friendly

• Limitations: lower resale value, not an investment metal

• Best for: everyday rings, bracelets and pieces that take knocks

22K vs 24K gold: which should you buy?

This is the comparison most Indian buyers make. The difference between 22K and 24K gold comes down to purity against wearability, and the difference between 22 carat and 24 carat gold means the same thing, since carat and K are interchangeable. In short: 22K is for wearing; 24K is for owning.

If you want jewellery you will wear, choose 22K. If you want to hold gold as a store of value, choose 24K in a form without making charges.

How much pure gold is in 10 grams?

Applying the purity percentage to a 10-gram piece shows how much actual gold you are paying for.

Purity calculation only, not a price quote. Stones, alloy mix and workmanship affect the final product.

A 22K piece contains more than 3 g extra gold compared with a 14K piece of the same weight. That does not automatically make it the better jewellery choice, because the extra alloy in 14K is what gives it hardness.

Making charges: the hidden cost of purity

Purity is only half the price picture. Jewellery carries making charges of roughly 8–25% of the gold value, plus GST, and those charges are not recovered when you sell. A 22K necklace and a 22K bar of the same weight are therefore very different investments.

If your goal is wealth rather than wear, buy 24K in coins, bars or digital gold, where the price tracks the live rate. Check today's gold rate per gram before comparing quotes; jewellers quote the 18 carat gold price today and the 22K rate separately, so compare like with like.

How to check purity: hallmarking in India

The Bureau of Indian Standards (BIS) hallmark has four components: the BIS logo, the purity grade (916, 750, 585 or 999), a six-digit HUID code, and the jeweller's mark. HUID hallmarking is mandatory for gold jewellery sold in India, and any HUID can be verified in the BIS Care app.

Official source: BIS Hallmarking

Which gold purity is best for you?

If you are wondering what is the difference between 18K, 22K and 24K gold in practice, it is the trade-off between durability and gold content. There is no single best karat. Match it to the purpose:

• Everyday jewellery: 14K, because it takes daily wear best

• Designer or gemstone pieces: 18K, the best balance of shine and strength

• Wedding and traditional jewellery: 22K, high purity with classic Indian colour

• Investment: 24K, maximum purity and no fabrication cost

Before buying, check purity, purpose, durability, total price including making charges and GST, the hallmark, and, for investment products, the buy-back or redemption terms.

Investing in 24K gold without jewellery

If you are buying gold to hold rather than wear, digital gold lets you buy 24K (999.9) in small amounts at the live rate, stored in insured vaults. eBullion offers 24K digital gold backed by Hindustan Platinum, priced off the live rate rather than the 18 carat gold price today, with a gold SIP starting from ₹10 a day for steady accumulation. Review pricing, storage and redemption terms before investing.