تحويل ستون إلى بنيوويت: المجوهرات والمعادن الثمينة والأحجار الكريمة

Exactly 292.57 pennyweights equal one stone (avoirdupois). This converts to 9.3143 troy ounces or approximately 288.58 metric grams. For jewelry professionals, remember that 1 pennyweight = 1/240 troy pound, and 1 stone = 14 pounds avoirdupois, which creates the precise 292.57 conversion factor. This relationship is critical for accurate precious metals pricing and gemstone valuation.

Pennyweights provide exceptional precision for valuable materials without requiring decimals for typical gemstones and jewelry pieces. A diamond ring weighing 4 pennyweights is easier to communicate than 6.21 grams or 0.014 stones. The troy weight system (including pennyweights) is the international standard for precious metals trading, making pennyweights the universal language in jewelry commerce. This historical standardization ensures price consistency across global markets and prevents calculation errors in high-value transactions.