Metal rim of the blade is finely notched and the diamond is then rolled into and embedded in these notches. This 6 inch inch blade is an economical and super thin saw blade for gemstones. With a steel core, the strength of steel gives you a thin kerf (thickness of cut) so you don't waste a lot of precious material. Use an aluminium oxide dressing sticks for sharpening these blades. The blades will rust if left standing in water for an extended period of time. If you choose to leave your blades in water over night Gemworld recommends adding a rust inhibitor to your water. Size: 6 x 0.3 x ¾ ... Read more