What Is This Tool?
This converter allows users to translate weights measured in carats, a unit for gemstones and pearls, into the US assay ton, which is used in mining and metal content reporting. It supports precise conversions between these specialized units.
How to Use This Tool?
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Enter the weight value in carats (car, ct).
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Select the target unit as ton (assay) (US) [AT (US)].
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Click the convert button to see the equivalent mass in assay tons.
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Use the output for reporting, mining calculations, or assay documentation.
Key Features
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Converts gemstone mass units (carat) to mining industry assay mass units (US assay ton).
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Supports units commonly used in jewelry, metallurgy, and precious metal assay labs.
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Provides exact conversion based on standardized definitions.
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Browser-based tool accessible without software installation.
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Facilitates translation of small sample masses into assay reporting units.
Examples
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10 carats equals 0.068571421 ton (assay) (US).
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50 carats equals 0.342857105 ton (assay) (US).
Common Use Cases
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Converting gemstone weights for precious metal content analysis.
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Reporting assay metal concentrations on certificates by assay ton.
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Contractual calculations based on metal per assay ton in ore shipments.
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Translating historical assay data into modern assessment units.
Tips & Best Practices
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Confirm the exact assay ton definition used as it can vary by context.
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Use this tool when precise gemstone-to-assay mass conversion is needed.
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Scale values appropriately to avoid very small decimal assay ton results.
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Complement conversions with grams per tonne or troy ounces per short ton for clarity.
Limitations
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The US assay ton unit is historical with variable mass depending on jurisdiction.
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Carat is a small unit resulting in very small assay ton equivalents.
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Modern assay reporting may require other units to prevent ambiguity.
Frequently Asked Questions
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What is a carat used for?
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A carat is a mass unit primarily used to weigh gemstones and pearls, defined as exactly 200 milligrams.
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Why does the US assay ton vary in mass?
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The US assay ton is a historical unit whose exact mass has changed depending on mining jurisdiction and practice.
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Can I use this conversion for modern assay reporting?
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Often modern reporting uses grams per tonne or troy ounces per short ton to avoid ambiguity from assay ton variations.
Key Terminology
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Carat [car, ct]
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A unit of mass for gemstones and pearls, exactly 200 milligrams, subdivided into 100 points.
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Ton (assay) (US) [AT (US)]
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A historical mining mass unit for precious-metal assay samples with variable exact mass depending on jurisdiction.