To what extent are jewelry designs protected by copyright/IP law?

If I want to borrow ideas from a copyrighted jewelry design and then sell the resulting product, how much does my design need to differ from the copyrighted design? Would a very small change be enough, or do I need to change the whole "feel" of the piece? I know this is a vague question, but a... show more If I want to borrow ideas from a copyrighted jewelry design and then sell the resulting product, how much does my design need to differ from the copyrighted design? Would a very small change be enough, or do I need to change the whole "feel" of the piece? I know this is a vague question, but a "ballpark" answer should suffice.
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