not mixing stones
"Similar to mixing metals, a lot of ladies shy away from mixing different stones when layering jewelry," Kwon observed. "Yes, jewelry is meaningful and valuable, but it should also be able to be worn on a daily basis. There really are no rules as to what goes with what. If you have a favorite emerald piece, a pearl piece, and a diamond piece, wearing them all together will be meaningful to you and will simultaneously create a more interesting eye-catching look.