Most designers have all of their operations under one roof including production, logistics and administration. This promotes efficiency and quality control. Service after the sale (repairs, sizing) is usually conducted at the factory, requiring the piece to be shipped to the designer. This is done to ensure the integrity of the product after servicing, and to protect the brand. In some cases, the retailer is authorized by the designer to do certain types of work in order to avoid delays and shipping costs. An advantage of choosing a designer brand is the assurance that no matter where you go, you will be able to get service from jewelers qualified to restore the piece to original condition. This is especially important with jewelry that has intricate design elements or diamond setting techniques such as micro pav? that require a high level of expertise.