The hardware diamond button is a combination of diamond and hardware buttons. The two materials are not the same.
The imitation diamonds used on the buttons are generally made of plastic acrylic drills (also called colloidal drills) and rhinestones (glass drills) made of glass or synthetic crystals. For the button on the imitation diamond is mainly these two, generally higher than the diamond drill.
The materials commonly used for hardware buttons include copper, iron, zinc alloys, aluminum, and stainless steel, and are also called metal buttons. Commonly used are copper and zinc alloy materials.
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