Diacut

All lapidary blades require some sort of lubricant. While diamonds will cut/grind most anything, they do fracture at very high temperatures. The more surface area of the rock in contact with the blade the higher the temperatures generated. Hence the larger the diameter of the saw blade requires more lubricating. What we are doing here is reducing the friction between the saw blade and the rock. Friction generates the heat. Friction is bad!

Water Soluble Coolant. Recommended for use by faceters and cabbers, this popular water soluble lubricant and coolant was developed by Graves for lapidary cutting, grinding and sanding with diamond tools. Dia-cut contains a special mixture of rust and corrosion inhibitors, wetting and settling agents and a mild detergent for lubrication.