Dona Jóia is a jewelry retailer and goldsmith based in Mafra, Portugal, offering jewelry and watches through its online store and physical location on Rua José Elias Garcia. Its selection includes pieces made from sterling 925 silver and Swarovski crystals, as well as gold-plated silver earrings. Shoppers can browse necklaces, bracelets, earrings, rings, chains, medals and wedding bands, with collections and products associated with names including Nomination, Marmara, Filigrana and TOUS. The store also offers TOUS watches.

Dona Jóia provides information for customers shopping online, including ordering and delivery details, payment methods, a size guide, and policies for returns and refunds. Customers can contact the business by phone or email, or visit its Mafra address. The website also provides company information, terms and conditions, a privacy policy and access to the electronic complaints book. With a varied range of jewelry styles and practical shopping guidance, Dona Jóia serves customers looking for pieces in silver, gold and crystal, alongside watches.