Required
Total item weight + explicit layer fraction + layer karatUse an explicit mark or documented ratio
Gold-Filled Jewelry Value Calculator
Use this estimate only when you have an explicit gold-layer fraction and karat mark or documentation. The tool will not infer a gold layer from the words gold filled, plated, or a color description alone.
Current Gold spot reference
$4,188.08USD · per fine troy ounceData source Twelve Data quoteLast updated Oct 2, 2026, 5:28 AM UTCFX reference date 2026-10-02Status Latest validated provider value — timing follows the source
Not supported
Unmarked plating or inferred layer thicknessOutput
Mark-based contained-gold estimateSpecification and intent
Solid gold, gold filled, and gold plated are different
Solid-gold fineness describes the whole metal item. Gold-filled or overlay marks describe a mechanically bonded layer; gold plating is a surface treatment whose recoverable mass is not predictable from total item weight.
Interactive tool
Estimate from a disclosed layer mark
Select only the fraction actually stamped or documented, enter the marked layer karat and the metal item's measured weight.
For a verified 1/20 mark, enter 1.
For a verified 1/20 mark, enter 20; do not infer it.
Estimated fine-gold layerEnter exact mark and weightRequires all exact item and mark inputs.
Theoretical layer value · USDUnavailableCurrent spot value only; not a sale offer.
Enter the measured weight, exact disclosed ratio, and marked layer karat.
The ratio must come from an exact, verified mark or documentation. This estimates contained gold only; it does not authenticate the mark or predict refining recovery. Gold-plated items have no predictable gold mass from total weight alone.
Calculation method
How the result is calculated
Estimated fine-gold mass = item metal weight × disclosed layer-weight fraction × marked layer karat ÷ 24.
This does not authenticate a mark, determine plating thickness, predict refining recovery, or imply a buyer will pay the theoretical amount. Do not include stones or non-metal parts in item weight.
Evidence and references
Specification sources
Primary references where available
Information only, not investment advice. Theoretical metal value is not a dealer offer, retail price, jewelry appraisal, assay, or guaranteed sale price.