18K Gold Price Today

18 karat gold contains 75% pure gold and 25% alloying metals, making it the global standard for fine luxury jewelry. It carries the internationally recognized 750 fineness hallmark (750 parts per thousand of pure gold). Available in yellow, white, and rose variations, 18K gold is the preferred purity for prestigious brands like Cartier, Tiffany & Co., Bulgari, and Van Cleef & Arpels.

To calculate the 18K gold price, multiply the current 24K spot price per gram by 0.75. If pure gold trades at $100 per gram, 18K gold has an intrinsic metal value of approximately $75.00 per gram before any design, craftsmanship, or brand premiums.

18K gold is the dominant purity in European and Asian jewelry markets, where consumers prefer higher gold content. In Italy, France, and much of continental Europe, 18K is the standard karat for fine jewelry and is often the minimum purity offered at established jewelers. It is also the standard purity for high-end Swiss watches by Rolex, Patek Philippe, Audemars Piguet, and Omega for their gold timepieces.

The 75% gold content gives 18K a deeper, richer yellow tone than 14K gold, which many buyers find more visually appealing. The 25% alloy content provides enough hardness for everyday wear, making 18K suitable for engagement rings, wedding bands, and statement pieces.

The alloy composition is adjusted to produce white gold (using palladium or nickel) or rose gold (using a higher copper ratio), all while maintaining the same 750 purity standard.