How to Calculate Gold and Silver Prices per Gram by Karat?
Karat (K) measures the purity of gold on a scale of 24 parts. 24K gold is 99.9% pure, highly soft, and used for investment bars. 21K (87.5% gold) is the jewelry benchmark in Morocco, Egypt, and the Gulf. 18K (75% pure gold mixed with copper and silver) is the European standard, offering superior scratch resistance.
Understanding Gold Karats: Differences Between 24K, 22K, 21K, and 18K
Base officielle de l'or pur 99.9% coté en bourse à Londres.
Exemple pour l'or 18K : Prix 24K × 0.750 d'or pur.
Intègre le travail d'orfèvrerie et la marge artisanale du bijoutier.
Official Karat, Gold Purity and Hallmark Certification Chart
Fineness in parts per thousand, fine gold proportion, and legal hallmark marks
| Karat Rating | Fineness (‰) | % Pure Gold | Hallmark Stamp | Main Applications |
|---|---|---|---|---|
| 24 Karat Gold | 999 ‰ | 99.9% | Seahorse or '999' | Investment bullion bars, official market coins |
| 22 Karat Gold | 916 ‰ | 91.6% | Bordered Eagle or '916' | Traditional Middle Eastern, Gulf, and Indian jewelry |
| 21 Karat Gold | 875 ‰ | 87.5% | Stamp '875' | Popular bridal jewelry in North Africa and the Arab world |
| 18 Karat Gold (750) | 750 ‰ | 75.0% | Eagle head or '750' | Fine jewelry standard, diamond engagement rings, luxury watches |
| 14 Karat Gold | 585 ‰ | 58.5% | Scallop shell or '585' | Standard commercial jewelry in the US and Northern Europe |
| 9 Karat Gold | 375 ‰ | 37.5% | Clover leaf or '375' | Affordable durable jewelry, highly scratch-resistant alloy |
| 925 Sterling Silver | 925 ‰ | 92.5% | Minerva head or '925' | Solid silver rings, necklaces, tableware, and coins |
How Is the International Gold Spot Price Determined?
The gold spot benchmark is determined twice daily in London by the LBMA (London Bullion Market Association) at 10:30 AM and 3:00 PM GMT. Expressed in US dollars per troy ounce (31.1035 g), it serves as the reference for central banks and global exchanges.
What Is the 'Making Charge' (Façon) in Jewelry?
In traditional gold trade, jewelry pricing comprises two components: the intrinsic gold weight and the making fee ('Façon' or 'المصنعية'). The fee compensates jeweler craftsmanship. When selling pre-owned jewelry, buyers typically only pay for the raw scrap gold weight.
How Does Gold Price Determine the Islamic Zakat Nisab?
In Islamic jurisprudence, Nisab is the minimum wealth threshold for annual Zakat al-Maal, equal to 85 grams of 24K pure gold (or 595 grams of pure silver). Once liquid wealth exceeds this threshold for a full lunar year, 2.5% Zakat is due.
Frequently Asked Questions (FAQ) on Gold and Metals
How much does a troy ounce of gold weigh?
In precious metals, one troy ounce (oz t) equals exactly 31.1034768 grams, unlike standard imperial avoirdupois ounces (28.35 g).
How can you verify 18K or 21K hallmarks?
Look for official hallmarks stamped on jewelry: '750' indicates 18K gold, while '875' indicates 21K gold.
Why is gold considered a safe haven asset?
Gold retains purchasing power across generations because its supply is limited and cannot be printed by central banks during inflation or geopolitical crises.
Why is jewel scrap gold buyback price lower than the international spot market price?
Spot prices represent pure raw 24K bars traded wholesale in financial centers. When selling back used jewelry, buyers deduct actual karat fineness (e.g. 18K only has 75% gold content), melt and refinery loss margins (10-20%), and gem weight.
How is the Nisab threshold calculated for Zakat al-Maal in 2026?
The religious Nisab threshold equals the market value of 85 grams of pure 24K gold (or 595 grams of pure silver). If your accumulated surplus wealth held for a full lunar year exceeds this threshold, the obligatory Zakat rate is 2.5%.
About the Live Gold & Silver Price Calculator & Precious Metals Guide
Automated calculation optimization & decision support
Automated optimization: Smart financial flow and real-cost simulation, dynamic forward-looking amortization schedules and net yield models, with continuous alignment to benchmark thresholds (real-time gold/silver Nisab rates and FX feeds).
Moroccan Dirham (MAD), Euro (EUR), US Dollar (USD) & official benchmarks
Comprehensive support for flagship currencies and benchmarks: Moroccan Dirham (MAD), Euro (EUR), and US Dollar (USD). For Zakat al-Maal, the Nisab threshold is dynamically assessed using official gold (85g) and silver (595g) benchmark values in local currencies. For lunar date calculations, algorithms include moon-sighting calibrations across North Africa and the Middle East.