Mason & Madison Co. is an online jewellery retailer founded in 2016 that sells affordable, waterproof, everyday fine jewellery. The company claims it produces luxury-style pieces, handcrafted without the usual markups, but has been heavily criticised by customers for poor product quality and alleged fulfilment issues. The company, self-promoted as providing fine jewellery for every day, not just special occasions. They sell a massive selection of tarnish-free and hypoallergenic products, such as 14k/18k gold necklaces, chains and pearl jewellery. The brand has a presence in New York, NY and operates a largely direct-to-consumer online drop model. The brand generally has a poor reputation on independent review sites such as Trustpilot, with customers citing major problems with orders and quality.