What does a silver market figure in pounds per gram represent, and how does fineness affect the amount of silver in an item? This is a reference guide to units and metal content—not a second valuation calculator or a promise of a buying price.
Checking the latest verified daily market record…
Precious-metals market quotations commonly use a troy ounce. It is not the same as an ordinary household ounce. The site’s chart implementation uses a rounded conversion of 31.1035 grams per troy ounce. A GBP-per-troy-ounce market reference divided by 31.1035 gives the corresponding approximate GBP-per-gram market reference, subject to source and rounding checks.
This converts units only. It does not calculate what a buyer will pay for jewellery, silverware, coins or bars. Use the grams-and-ounces guide if you need to compare troy and standard ounces.
Fineness is stated in parts per thousand. The figures below describe silver content, not London Gold Centre buying categories or rates. A stamped number on its own does not prove composition or amount to a complete UK hallmark.
| Description | Fineness | Minimum silver proportion represented |
|---|---|---|
| Fine silver | 999 | At least 999 parts per thousand |
| Britannia silver | 958 | At least 958 parts per thousand |
| Sterling silver | 925 | At least 925 parts per thousand |
| 800 silver | 800 | At least 800 parts per thousand |
The descriptions follow British Hallmarking Council fineness guidance. Marks and the item itself still need appropriate assessment.
Minimum calculation: 10 × 925 ÷ 1,000 = 9.25 g. The 10 g must be the relevant alloy weight, not the total weight of an item with stones or non-silver components. This arithmetic is not a cash quote; it leaves out the applicable buying rate and any item-specific assessment.
Enter its details in the silver calculator for an indicative estimate, or read how we assess silver. If you want to buy silver rather than sell it, visit the silver shop.
