BS ISO 19376-1-2025 PDF

Full title and description

STB BS ISO 19376-1-2025 — Jewellery and precious metals — Vocabulary — Part 1: Precious metals and units. This publication is the international ISO vocabulary defining terms and units used in the precious‑metals sector; it is also published/adopted as a national British Standard (BS ISO 19376-1:2025) and is distributed by national sales bodies and resellers as the BS adoption.

Abstract

This document defines a set of terms and definitions for the precious‑metals industry and is intended to provide greater clarity to everyone in the supply chain down to the consumer. It explicitly excludes terms applicable specifically to jewellery and gemstones.

General information

• Status: Published.
• Publication date: ISO edition published July 8, 2025 (ISO record); BS national adoption published 11 July 2025.
• Publisher: International Organization for Standardization (ISO). Also published/adopted and distributed as BS ISO 19376-1:2025 by the British Standards Institution (BSI) / national sales channels.
• ICS / categories: 39.060 (Jewellery) and 01.040.39 (Precision mechanics — Jewellery vocabularies).
• Edition / version: Edition 1, 2025 (ISO 19376-1:2025).
• Number of pages: ISO published edition: 13 pages; BS national publication (BS ISO 19376-1:2025) commonly distributed with national foreword/formatting = 20 pages (publisher variation between ISO and BS formats).

Scope

Defines vocabulary (terms and definitions) used in the precious‑metals industry relating to precious metals and units of measure. The scope is focused on the metal materials and measurement units themselves (naming, fineness, units, symbols and related terminology) and excludes terminology that applies specifically to jewellery items and gemstones. The edition is intended to harmonize language across supply chains — from refiners and assay offices to manufacturers, traders and consumers.

Key topics and requirements

• Standardized terms and definitions for precious metals (e.g., gold, silver, platinum group metals) and alloy nomenclature.
• Definitions and conventions for units and measures used in trade and testing (grams, troy ounces, carats where applicable for mass units, fineness expressions and symbols).
• Terminology for fineness/quality descriptors (fineness, parts per thousand, karat/k).
• Clear exclusion statements (terms specific to jewellery and gemstones are excluded from Part 1).
• Harmonization objective: improve clarity in labeling, testing communication, trade documents, and consumer information.

Typical use and users

Used as a reference vocabulary by: assay and hallmarking offices; refiners and metal producers; jewellery and precious‑metals manufacturers; testing laboratories; regulators and customs authorities; standards committees; commercial documentation teams; retailers and consumer‑facing labeling. It is used wherever consistent, authoritative definitions of precious‑metal terms and units are required.

Related standards

Complementary standards from ISO/TC 174 and related committees include other jewellery and precious‑metals standards (for example ISO 6893:2024 — inspection/terminology for small diamonds — and other ISO/BS standards on fineness, testing and inspection). National adopters often publish a BS identical/adopted text (BS ISO 19376-1:2025) with national forewords and bibliographic data.

Keywords

precious metals; vocabulary; units; fineness; alloy; karat; troy ounce; gram; hallmark; assay; ISO 19376; BS ISO 19376-1.

FAQ

Q: What is this standard?

A: An ISO international vocabulary (Part 1) that defines terms and units used for precious metals and their measurement; also made available as a national adoption (BS ISO 19376-1:2025).

Q: What does it cover?

A: Definitions and standardized terms for precious metals and measurement units, plus related symbols and conventions. It is explicitly limited to precious metals and units and excludes jewellery‑ and gemstone‑specific terminology.

Q: Who typically uses it?

A: Assay offices, refiners, laboratories, manufacturers, retailers, regulators, standards committees and anyone needing consistent terminology for trade, testing and labeling of precious metals.

Q: Is it current or superseded?

A: Current — published in 2025 (ISO published July 2025; national BS adoption published in July 2025). Check national sales bodies or ISO catalogue for any later amendments or revisions after publication.

Q: Is it part of a series?

A: Yes — it is presented as Part 1 (precious metals and units) of the jewellery and precious metals vocabulary work; related ISO/TC 174 standards cover other jewellery and gemstone topics (other parts or separate documents address jewellery‑specific vocabulary and inspection/test methods).

Q: What are the key keywords?

A: Precious metals, units, vocabulary, fineness, hallmark, assay, alloy, karat, troy ounce, gram.