What is a US assay ton (AT)?

The US assay ton is a traditional mining mass unit used to define standard sample mass for precious-metal content, with values historically differing by region.

Why convert from ton (assay) to carat?

Conversion helps translate mining and assay data into gemstone weight units, facilitating valuation and comparison in jewelry and precious metals trading.

Is the carat used only for gems?

Primarily, the carat measures gemstones and pearls, offering precise weight distinctions for the jewelry industry.

Convert Ton (assay) (US) [AT (US)] to Carat [car, ct] Easily Online

Use our quick and accurate online tool to convert weights from the US assay ton to carats, enabling straightforward mass translation for precious metals and gemstones.

Ton (assay) (US) [AT (US)]

Carat [car, ct]

Please check your input. It must be a valid numeric value.

Ton (assay) (US) [AT (US)] to Carat [car, ct] Conversion Table

Ton (assay) (US) [AT (US)]	Carat [car, ct]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Ton (assay) (US) [AT (US)] to Carat [car, ct] Conversion Table
Ton (assay) (US) [AT (US)]	Carat [car, ct]

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What Is This Tool?

This unit converter facilitates the transformation of mass values from the US assay ton, a traditional mining unit, into carats, a gemstone weight measure. It supports users in mining, assaying, jewelry, and gemology to interpret and compare weights across different standards.

How to Use This Tool?

Enter the value you want to convert in ton (assay) (US)
Select the source unit as ton (assay) (US) and target unit as carat [car, ct]
Click the convert button to see the equivalent mass in carats

Key Features

Converts between US assay tons and carats based on established conversion rates
Supports understanding and comparison of precious metals and gems weight
Browser-based and easy to use with no installation required

Examples

2 Ton (assay) (US) converts to 291.6667 Carat
0.5 Ton (assay) (US) converts to 72.916675 Carat

Common Use Cases

Reporting precious metal content as ounces per assay ton in mining
Calculating contractual payments for ore shipments based on assay ton data
Converting historic assay results to gemstone-standard units for valuation
Weighing and pricing diamonds and other gems in the jewelry industry

Tips & Best Practices

Confirm the exact mass definition of the assay ton in your context due to its historical variation
Use this tool primarily for mass translation relevant to mining, assaying, and jewelry to ensure practical accuracy
Record converted values alongside original units for clarity in reporting

Limitations

The US assay ton's value has historically varied, potentially causing ambiguity without explicit mass definitions
Carat is a much smaller unit designed mainly for gemstones, so direct use outside related contexts might not be practical

Frequently Asked Questions

What is a US assay ton (AT)?: The US assay ton is a traditional mining mass unit used to define standard sample mass for precious-metal content, with values historically differing by region.
Why convert from ton (assay) to carat?: Conversion helps translate mining and assay data into gemstone weight units, facilitating valuation and comparison in jewelry and precious metals trading.
Is the carat used only for gems?: Primarily, the carat measures gemstones and pearls, offering precise weight distinctions for the jewelry industry.

Key Terminology

US Assay Ton (AT): A historical mining mass unit used for precious-metal sample masses, with values that have varied by jurisdiction and practice.
Carat (car, ct): A unit of mass equal to 200 milligrams, primarily used for weighing gemstones and pearls.

Quick Knowledge Check

What is the primary use of the US assay ton?

Measuring gemstones in jewelry

Defining standard sample mass in mining and assaying

Recording pearl masses for certificates

How is one carat defined?

Exactly 100 grams

Exactly 200 milligrams

Exactly 1 gram

Why might the US assay ton cause ambiguity?

Because it is the same worldwide without any variation

Because its exact mass has historically varied by jurisdiction

Because it is not used in mining contexts

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