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Jewelry Maker Calc – Diamond Weight Estimator
x402
Jewelry Maker Calc – Diamond Weight Estimator is a paid API for AI agents from jewelry-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Estimates a diamond's carat weight from its millimetre dimensions and shape, or calculates the typical diameter of a round stone for a given carat weight.
Price / call$0.02
Success—
StatusUnknown
How this service works
Estimate a diamond's carats from millimetre size and shape, or the diameter of a round stone for a given carat weight.
Output
Returns estimated carat weight (and equivalent points and grams), plus the stone's computed dimensions (length, width, depth in mm and depth percent), the shape-specific formula factor used, a plain-English summary, and a disclaimer about the estimate being approximate.
Example use cases
Identify stone weight from measurements
“I have a round diamond that measures 6.5mm across — can you estimate how many carats it is, assuming a standard 61% depth?”
Find diameter for target carat weight
“I want to set a 1.5 carat round solitaire — what diameter in mm should I expect the stone to be?”
Estimate fancy-cut diamond weight
“I'm buying a marquise diamond that's 12mm long and 6mm wide with a 65% depth — what's the estimated carat weight?”
Technical details
Endpoint
GEThttps://jewelry-calc.x402tookit.com/diamond-weight?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, formula-based estimate of a diamond's carat weight from its physical millimetre measurements (or vice versa) and do not have access to a gemological lab report. It supports eight common diamond shapes and allows custom depth percentages, making it more flexible than a simple lookup table. Prefer it over manual calculation or generic unit converters when building jewelry e-commerce tools, chatbots assisting buyers, or inventory cataloguing workflows.
Side effects
- Missing both lengthMm and carats — endpoint requires at least one to compute; returns an error or empty result
- Invalid shape string — unrecognised shape values may fall back to round defaults or return an error
- widthMm required for non-round shapes but omitted — calculation may be inaccurate or fail
- Extreme or implausible dimension values may produce degraded=true results with a warning in reasons array
- Network or payment failure returns HTTP 402 or 5xx with no computation result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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