18 karat (18k) gold represents gold with 75% gold content and 25% alloy metals. 18k gold is a popular choice for fine jewelry, providing a good balance between gold content, durability, and appearance. The alloy metals, typically copper, silver, or other metals, increase the hardness and durability of the gold while maintaining a high gold content. 18k gold is widely used in high-quality jewelry, watches, and luxury items.

Converting 18 karat gold to other purity units is essential for understanding gold content and jewelry specifications. 18 karat equals 75% purity, representing gold with 25% alloy content. Karat to percent purity conversions help communicate gold content, while karat conversions help compare different gold purities. Whether you're converting 18 karat to percent purity for gold content, 18 karat to other karat values for purity comparisons, or using an 18 karat converter for jewelry calculations, karat conversions are fundamental to gold purity measurements.

18 karat gold is extensively used in fine jewelry, luxury watches, and high-quality jewelry items. The 18k standard provides excellent gold content while maintaining durability for everyday wear. Jewelry made from 18k gold is valued for its quality and appearance, making it a popular choice for engagement rings, wedding bands, and other significant jewelry pieces.

Diamond karat (ct) is a unit of weight used for gemstones, particularly diamonds, equal to 200 milligrams or 0.2 grams. The karat for gemstones is different from the karat used for gold purity. One diamond karat is divided into 100 points, so a 0.50 karat diamond can also be described as 50 points. Diamond karat is one of the "Four Cs" used to evaluate diamond quality, along with cut, color, and clarity.

Converting diamond karats to other weight units is essential for understanding gemstone weights and jewelry specifications. One diamond karat equals 200 milligrams, 0.2 grams, 0.00705479 troy ounces, or 3.08647 grains. The diamond karat to gram conversion is common for weight measurements, while diamond karat to milligram conversions are fundamental for precise gemstone weights. Whether you're converting diamond karats to grams for weight measurements, diamond karats to milligrams for precise weights, or using a diamond karat converter for jewelry calculations, diamond karat conversions are fundamental to gemstone weight measurements.

Diamond karat is extensively used in jewelry for measuring gemstone weights, particularly diamonds. Jewelers specify diamond sizes in karats, with larger karat values indicating larger and typically more valuable stones. The diamond karat unit's relationship to weight makes it essential for understanding gemstone sizes and values, providing a standard unit for measuring gemstone weight in the jewelry industry.