Highkarat

Highkarat is a term used in the jewelry trade to denote gold with high purity. While not a formal, universal standard by itself, it is commonly used to describe gold alloys with higher karat values, typically 18K, 22K, or 24K.

Purity and alloys

The karat value indicates how many parts out of 24 are gold. 24K is considered pure gold in practice (often marked as 999 fineness in some markets). 22K contains about 91.7% gold, with the remainder made up of alloy metals such as copper or zinc to improve strength and alter color. 18K contains 75% gold, with 25% alloy metals, producing greater durability and a different hue. Higher karat levels generally mean a richer golden color but softer wear resistance, since pure or near-pure gold is relatively malleable.

Appearance and use

Higher karat gold tends to have a brighter, more saturated yellow color. 22K and 24K are common in traditional or high-value jewelry, coins, and investments, while 18K is common in fine jewelry that seeks a balance of color, purity, and durability. Alloys for lower or higher karat ranges can influence hue, with copper producing warmer tones and silver or palladium producing whiter or paler shades.

Labeling and standards

Gold purity is usually indicated by karat numbers or fineness marks such as 750 (18K), 916 (22K in some regions), 585 (14K), or 999 (24K). Hallmarks and local regulations govern how these marks are applied, and consumer protections vary by country.

Care and considerations

Higher karat gold is more prone to scratching and bending and may require gentler handling and cleaning. Price generally rises with purity, reflecting gold content and market value.