The debate between 22-karat (22K) and 18-karat (18K) gold centers on the balance between purity and structural durability. 24-karat gold is 100% pure, but it is too soft for structural jewellery. 22K Gold (91.6% purity) is the traditional gold of India. It has a deep, warm yellow hue that is unmatched in its richness. It is ideal for carved wedding bands, plain gold bangles, and traditional enamelled or engraved pieces. However, because 22K is malleable, it lacks the hardness to securely lock and protect fine gemstones and diamonds -- heavy friction can warp the gold and release precious stones over time. 18K Gold (75% purity, combined with copper, silver, or zinc) is the preferred medium for intricate gemstone settings, bridal diamond suites, and daily-wear bands. The alloy composition provides structural strength, preventing prongs from shifting or breaking, while retaining a luxurious gold glow. A common rule of thumb: choose 22K for pure-metal statement pieces, and 18K or platinum for anything focused on diamond settings.