Gemsmakers · Antique App Collection · App 37

Antique Gold Scrap Value Calculator by Karat and Weight

Estimate fine-gold content and theoretical scrap payout from measured weight and purity. Use realistic inputs and review the notes before making buying, selling, restoration, or research decisions.

Mobile-friendlySimple first, advanced optionalIllustrative estimates

Enter your details

Example values are provided where useful. Replace them with your own figures or documented observations.

Enter the weighed gold-bearing item; remove stones and non-gold parts when possible.
Converted to grams before calculating fine-gold content.
Use a tested or documented purity where possible.
Enter current gold price from a source you trust.
More options (optional)
Only used when Other / purity estimate is selected.
Discount from theoretical metal value.
A fixed fee deducted after the percentage allowance.
Optional comparison price; not an appraisal.

How to use this tool

  1. Measure the gold-bearing part and choose its weight unit.
  2. Choose the documented/tested karat or select a custom purity estimate.
  3. Enter a current gold price and optional buyer deductions to see theoretical value and estimated payout.

How the result works

Fine-gold content is the item weight multiplied by the assumed purity. It is converted to troy ounces and multiplied by the user-entered spot price.

Whole-item weight can overstate value when gemstones, steel springs, solder, plating, or other metals are present. Use reliable testing and an actual buyer quote before making a transaction.

Frequently asked questions

Does 18K gold contain 18 grams of gold?
No. 18K indicates 18 parts out of 24 by mass in a gold alloy, approximately 75% gold, assuming the item is genuinely that fineness.
Why enter a spot price manually?
Gold prices change. A user-entered price lets you use a current source instead of an outdated stored number.
Does this tool identify real gold?
No. It performs arithmetic only. A stamp or description is not proof of metal composition.
Are buyer deductions fixed?
No. Different buyers, assays, refining yields, and transaction sizes produce different offers. Enter a real quote when available.
Is collectible value equal to scrap value?
No. Antiques may sell for more or less due to maker, design, condition, provenance, and demand. This calculator does not appraise the item.

Related Antique Tools

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