quilataje

Quilataje, also known as fineness or purity, is a system used to express the proportion of a precious metal, most commonly gold or silver, in an alloy. It is expressed in parts per thousand. The highest purity for gold is 24 karats, which signifies 24 parts gold out of 24 total parts, meaning it is pure gold. In the quilataje system, this would be represented as 1000. Therefore, 1000 quilataje is the equivalent of 24 karat gold.

Lower purities are represented by lower quilataje numbers. For example, 18 karat gold, which is 75% gold (18 parts gold out of 24), would be 750 quilataje (750 parts per thousand). Similarly, 14 karat gold, which is approximately 58.3% gold (14 parts gold out of 24), is commonly marked as 585 quilataje, indicating 585 parts per thousand. Silver is also subject to similar fineness standards. Sterling silver, for instance, is 92.5% silver, which corresponds to 925 quilataje.

The quilataje system is crucial for consumers and jewelers to understand the actual precious metal content of an item. It ensures transparency in the market and allows for accurate valuation. It is often stamped directly onto the jewelry itself as a mark of authenticity and quality. This system helps differentiate between pure precious metals and alloys, where other metals are mixed in to increase durability, alter color, or reduce cost.

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