Exclusively designed for processing materials for softer rocks like turquoise, gaspeite, opals. These blades are manufactured by crimping Synthetic diamonds directly into the edge of the saw blade. They are best suited for turquoise, , glass, and stones in the 4-7 range on the Mohs hardness scale. Used for Trimming: They are excellent for trimming small shapes into stones. achieving satisfactory cutting results and reducing unnecessary material consumption. This thin diamond lapidary saw blade offers a very good cost effective option for those that want either very thin kerfs or plan on short term use. Colour: Silver Material: Diamond Size: 200 x 25 x 0.5mm Package Contents: 2 x Jade cutting piece note: 1.This simply means that these blades are meant for small material, not large or slabbing techniques. Also, these blades operate in a single direction so make sure that the on the blade is pointed towards you when mounting. 2.Use with water as a lubricant. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.