and inform him that it is used, or is such clarification unnecessary, seeing that some customers never ask whether the piece is new or not?

Answer: He is duty-bound to offer sincere counsel and to love for his brother what he loves for himself. Everyone knows that if someone sold you an item that had been lightly used—its use leaving no visible trace—yet presented it as brand-new, you would regard that as deception and fraud. If you would not accept people doing this to you, how can you permit yourself to do it to others? Therefore, it is not permissible for a person to act in this manner unless he makes the matter clear to the buyer and says, “This piece has been used, though only lightly,” or words to that effect.

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Question Eight: What is the ruling on someone who hands his gold to a goldsmith to be fashioned, where his gold may become mixed with that of others during the smelting process, but when he collects it from the workshop he receives the very same weight he had delivered?