Convert grams to carats for diamond grading, jewelry making, and precious metal assessment. Accurate calculator with industry standards and real-world examples.
1 gram equals 5 carat
Formula: ct = g × 5.00000
The conversion between grams and carats is essential for the jewelry and gemstone industry, where 1 gram equals exactly 5 carats. This precise relationship is critical for diamond certification, precious metal valuation, and international gemstone trading. Whether you're a jeweler, gemologist, or collector, understanding this conversion ensures accurate assessments and fair pricing of valuable items.
Accuracy in gram-to-carat conversion directly impacts the value of diamonds, gemstones, and precious metals. A single carat difference can mean thousands of dollars in valuation. The carat system is the international standard for gemstone weight, while grams are used for precise laboratory measurements. Professionals must convert between these units for certification, insurance, and resale purposes. Errors in conversion can result in significant financial losses or legal disputes in high-value transactions.
Gemologists and certified appraisers use carat weight as the primary measure for diamond and precious gemstone valuation. Laboratory scales measure in grams, but certification documents must report in carats according to international standards (GIA, AGS). The conversion is fundamental to the 4Cs grading system (Carat, Cut, Color, Clarity). Accurate conversion ensures consistency across global gemstone markets and authentication documents.
Jewelry designers and manufacturers work with raw materials measured in grams but must communicate final weights in carats to clients and retailers. This conversion is crucial for cost calculation, material ordering, and quality control. Precious metal alloys containing gemstones require precise weight conversion for inventory management and production accuracy. Manufacturers must balance material costs (calculated in grams) with market pricing (quoted in carats).
| grams | carats |
|---|---|
| 1 g | 5 ct |
| 10 g | 50 ct |
| 25 g | 125 ct |
| 50 g | 250 ct |
| 100 g | 500 ct |
Formula: ct = g × conversion factor
The gram is a widely used unit for measuring weight. It is commonly used in various applications and industries worldwide.
The carat is a widely used unit for measuring weight. It is commonly used in various applications and industries worldwide.
This gram to carat converter uses high-precision conversion factors to ensure accurate results for professional and academic use.
Our calculator provides results with up to 10 decimal places for maximum accuracy.
Exactly 5 carats equal 1 gram. This conversion is crucial because gemstones and diamonds are always valued and traded in carats internationally, but laboratory scales measure in grams. The conversion ensures consistency between laboratory measurements and market pricing. For example, a 2-gram diamond would be certified as 10 carats. Understanding this relationship is essential for anyone buying, selling, or appraising gemstones to ensure accurate valuations and fair transactions.
The carat weight is the same for all gemstones - 1 gram always equals 5 carats regardless of the stone type (diamond, ruby, emerald, sapphire). However, the value per carat varies dramatically. A 1-carat diamond might cost $3,000-$8,000 depending on quality, while a 1-carat ruby could cost $100-$10,000 based on origin and color. The weight conversion is universal, but the price per carat depends entirely on the gemstone type, quality, and market conditions.
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