What process must jewelry return items undergo?

The process that jewelry return items must undergo is the verification of genuine diamonds at the Costco facility. This step is critical because it ensures the integrity of the merchandise being returned. By verifying the authenticity of the diamonds, Costco maintains trust with their customers, ensuring that they are receiving genuine products. This verification process helps to protect both the customer and the company from potential fraud or losses related to counterfeit items.

In the context of a retail environment, particularly in jewelry sales, there is a significant emphasis on authenticity and quality. Customers expect that if they return an item, especially one that is high-value like jewelry, it should be subject to a thorough check. This not only safeguards Costco's reputation but also reassures customers about their purchases.

The other options imply processes that either lack appropriate diligence or do not align with customer service standards. For instance, direct issuance of refunds without verification would expose the company to potential fraud. Immediate return to supplier could be impractical as it does not address the need for in-house verification. Lastly, destruction of counterfeit items, while sometimes necessary, is typically not the first step in handling returns; instead, verification takes precedence to determine the item's legitimacy first.