تحويل الأونصة إلى القيراط: المجوهرات والأحجار الكريمة والمعادن الثمينة

One avoirdupois ounce equals exactly 311.035 carats. However, if you're working with precious metals, one troy ounce equals 155.517 carats. The difference is crucial: avoirdupois ounces (28.3495 grams) are used for general goods and gemstones, while troy ounces (31.1035 grams) are the standard for precious metals. Always verify which ounce measurement you're using before converting.

Carats provide greater precision for small, high-value items. One carat equals 200 milligrams, allowing jewelers to measure fractional weights of gemstones with accuracy. Ounces, being much larger units, would require decimal notation for individual stones. The carat system became the international standard for gemstones through the Metric Carat Convention of 1913, ensuring consistent valuation globally regardless of local measurement systems.