Marble is a hard crystalline form of limestone used mostly in sculpture and architecture, marble is a softer natural stone and requires a harder bond to cut. Marble diamond blades are manufacturing using two methods.
Vacuum Brazing manufactured by welding synthetic diamond particles on to the outside edge fo the circular steel blade in a vacuum brazing furnace. All of the diamond particles are on the exterior edge of the blade, with no metal diamond mixture, vacuum brazed blades will cut a wide variety of meterial including, concrete, masonry, steel and various irons.
Electro plating - blades using diamonds embedded in metal coating, typically of nickel electroplating onto a steel blade base, can be made to be very thin up to 10 micrometers thick, for precise cutting
Diamond blades used to cut marble occasionally have diamond the can be visible on the edge of the blade but in some cases in larger sizes use the sintering method for bridge saw blades.