God made the gold and the precious stones etc, why shouldn't the women use them, even if they are christians?

God made the gold and the precious stones for people to adorn themselves not the things.because people are precious to God and the salt of the earth as He said , what is the use of the diamonds if we shouldn't use them wear them ?where to put them at the cups?the people can wear them as they are precious to God and for His honour looking fine and nice...even in old testament God said that he gave this to people to make them shining..and silk and rings and bracelets..