Pure platinum is not malleable, so platinum is mixed with other metals, such as gold in order to make platinum jewelry. Understanding the language of jewelers can help consumers make informed decisions when shopping for platinum pieces. Pure platinum is not malleable, so platinum is mixed with other metals, such as gold in order to make platinum jewelry. Understanding the language of jewelers can help consumers make informed decisions when shopping for platinum pieces. Pure platinum is not malleable, so platinum is mixed with other metals, such as gold in order to make platinum jewelry. Understanding the language of jewelers can help consumers make informed decisions when shopping for platinum pieces.