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Precision mechanics. Jewellery (Vocabularies)


BS EN 28653:1993

Jewellery. Ring-sizes. Definition, measurement and designation

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DD 234:1996, ISO/TR 11211:1995

Grading polished diamonds. Terminology and classification

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BS ISO 6426-2:2002

Horological vocabulary. Technical and commercial definitions

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BS ISO 1112:2009

Horology. Functional and non-functional jewels

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