ʻO ka Karat kahi hui gula i hui pū ʻia me nā metala ʻē aʻe ʻO ka "K" o ke gula ke kumu o ka huaʻōlelo haole "Karat", ka ʻōlelo piha: Karat gula, "AU" a i ʻole "G" kahi hōʻailona honua i hoʻohana ʻia e hōʻike i ka maʻemaʻe o ke gula (ʻo ia hoʻi, ka nui o ke gula i loko. ia) Hōʻike ʻia nā mea nani ʻo Rose gula e ka liʻiliʻi o ke gula, haʻahaʻa ke kumu kūʻai, a hiki ke hana ʻia i nā ʻano kala like ʻole, a hoʻomaikaʻi i ka paʻakikī, ʻaʻole maʻalahi i ka deformation a me ka lole. K gula e like me ka nui o ke gula a me nā helu 24K gula, 22K gula, 18K gula, 9K gula.
ʻO nā mea gula K me nā hoʻolālā nani a ʻono, māmā a ʻaʻole ia e kaumaha i kou lima a i ʻole ka ʻāʻī a i ʻole ka pepeiao. ʻO kēia mau mea palekana he haʻahaʻa haʻahaʻa a me ka pale ʻana i ka oxidation, ʻaʻohe pōʻino i ke olakino.