Manyan sandunan azurfa masu nauyin kilogiram 5 ga masu zuba jari masu himma waɗanda ke neman mafi girman ƙima. Mafi ƙarancin farashi akan azurfar saka hannun jari tare da takardar shaidar LBMA, ya dace don gina manyan kadarorin ƙarfe masu daraja yadda ya kamata.
