https://www.vintagejewelsgeek.co.uk/2010/11/vintage-jewellery-glossary-g.html
Vintage Jewels Geek blog: Jewellery Glossary - G
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https://www.antiquejewellerycompany.com/glossary/vintage/
Vintage | The Antique Jewellery Company Glossary
Sep 25, 2019 - Refers to jewellery of at least 50 but no more than 100 years of age.
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