Difference Between 18K and 22K Gold: Complete Comparison

Difference Between 18K and 22K Gold: Complete Comparison

18K and 22K gold are the two most common gold purities in Indian jewellery. 22K dominates traditional Indian jewellery (necklaces, bangles, chains), while 18K is standard for diamond and gemstone jewellery. Understanding the difference helps you know what you have and what to expect when selling.

Note: we published a 22K vs 24K comparison separately. This page focuses specifically on the 18K vs 22K comparison.

At a Glance

Side-by-Side: 18K vs 22K Gold

Why 18K Is Used for Diamond Jewellery

18K gold is harder and more durable than 22K because it has more alloy content (25% copper/silver/zinc vs 8.4% in 22K). This extra hardness is important for prong settings that hold diamonds and gemstones in place – a 22K prong would be too soft and could bend, releasing the stone. This is why engagement rings, diamond pendants, and most stone-set jewellery globally uses 18K (or 14K) gold rather than 22K.

Why 22K Is Used for Traditional Indian Jewellery

Traditional Indian jewellery (necklaces, bangles, haram) prioritises gold content and colour over extreme durability. 22K’s higher purity gives a richer, warmer yellow colour and is seen as more prestigious for gifting and dowry. Most Indian jewellery sold by traditional jewellers (from Tanishq to local goldsmiths) is 22K hallmarked.

Resale Value Comparison

How to Tell if Your Jewellery Is 18K or 22K

·         Check the BIS hallmark: 916 stamp = 22K, 750 stamp = 18K

·         XRF testing at any Attica Gold branch – free, accurate to ±0.1%

·         Visual colour alone is not reliable for distinguishing 18K from 22K

Why Choose Attica Gold Company

Attica Gold Company is ISO 9001:2015 certified with 200+ branches across Karnataka, Tamil Nadu, Andhra Pradesh, Telangana and Pondicherry. Your wait is over.

Frequently Asked Questions

What is the difference between 18K and 22K gold?

22K has 91.6% gold (harder yellow, softer metal, used in traditional Indian jewellery). 18K has 75% gold (slightly paler, harder metal, used for diamond/stone-set jewellery).

Which is more expensive, 18K or 22K gold?

22K is more expensive per gram: ₹13,965/g vs 18K at ₹11,438/g – a difference of ₹2,527 per gram.

Is 22K better than 18K for resale?

22K gives a higher per-gram payout because it has more gold content. But the total value depends on the weight of each piece, not just the karat.

Which gold should I sell first – 18K or 22K?

There is no rule. Both can be sold whenever needed. 22K gives a higher rate per gram; 18K gives less per gram but is still fully valued at its correct purity rate.

How do I know if my ring is 18K or 22K?

Check for a BIS hallmark: 750 = 18K, 916 = 22K. Or visit any Attica Gold branch for free XRF testing.

Can Attica Gold buy both 18K and 22K gold?

Yes. Attica Gold buys all purities: 24K, 22K, 18K, 14K – each paid at the correct IBJA rate for its tested purity.

Do most Indian necklaces come in 18K or 22K?

Most traditional Indian necklaces are 22K. Modern necklaces designed to hold diamonds may be 18K.