24-carat gold is called ______.

The correct answer is pure gold.

Key Points

• Gold purity is measured in karats, with 24 karats being 100% pure gold.
• Common gold purities include 24K, 22K, 18K, and 14K, where K stands for karats.
• The highest purity for gold is 24 karats, equating to 99.9% gold.

Additional Information

• Karat System: The karat system is used to denote the purity of gold, with 24 karats representing pure gold.
• Alloying: Gold is often alloyed with other metals such as copper or silver to increase its hardness and durability.
• Gold Standards: Different countries have various standards for gold purity, commonly 22K in India and 18K in Europe.
• Weight vs. Purity: "Carat" (with a "c") is also a unit of weight used for gemstones, distinct from "karat" (with a "k") for gold purity.
• Gold Uses: Pure gold (24K) is too soft for everyday wear, hence lower karat gold is used for jewelry to ensure durability.