Agostinho Dias, Lda. is a jewellery and watch business based in Guimarães, Portugal. Founded in 1986 by Agostinho Dias, the company is now led by the second generation and continues its focus on attentive service. It specialises in buying and selling gold, silver and watches, offering customers the opportunity to purchase, exchange or sell pre-owned items.

The collection brings together traditional and modern jewellery, with pieces available new or second-hand. Customers can explore jewellery in gold or silver, alongside carefully selected pre-owned watches from well-known international brands. The business presents its vintage jewellery and watch offerings with attention to detail, serving people looking for distinctive pieces or wishing to trade items they already own.

Agostinho Dias also invites customers to get in touch for enquiries about buying, exchanging or selling. Its shop is located at Alameda Dr. Alfredo Pimenta, 6, in Guimarães, and the company shares news, promotions and events through its newsletter and social media channels.