# ISO 11426:2014 — Withdrawn and superseded ISO standards For ISO 11426:2014, item title is Jewellery — Determination of gold in gold jewellery alloys — Cupellation method (fire assay); status code is 9599; successor is ISO 11426:2021; withdrawn / published date is 2014-11-26, recorded from its source on 2026-08-05. - **Identifier:** ISO 11426:2014 _(verified: appears in the quote below)_ - **Item title:** Jewellery — Determination of gold in gold jewellery alloys — Cupellation method (fire assay) _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 11426:2021 - **Withdrawn / published date:** 2014-11-26 _(verified: appears in the quote below)_ ## What the source says > 57647,IS,,ISO 11426:2014,Jewellery — Determination of gold in gold jewellery alloys — Cupellation method (fire assay),"Joaillerie, bijouterie — Dosage de l'or dans les alliages d'or pour la bijouterie-joaillerie — Méthode de coupellation (essai au feu)",2014-11-26,3,['39.060'],ISO/TC 174,9599,[26426],[75771],"['en','fr']",7,"

ISO 11426:2014 specifies a cupellation method (fire assay) for the determination of gold in gold jewellery alloys. The gold content of the alloys should preferably lie between 333 and 999 parts per thousand (?).

The procedure is applicable specifically to gold alloys incorporating silver, copper, and zinc. Some modifications are indicated where nickel and/or pal ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).