The Peridot Saw is a tool added by Project Red. It is a saw used for crafting blocks from Forge Microblocks by using it in a workbench with the material to be processed. The Peridot Saw has a durability of 513 uses, which is half of the Iron Saw from Forge Microblocks.
If the mod MineChem is installed, the Peridot Saw can be decomposed with the Chemical Decomposer into 2 Olivine and some other specific chemical compounds from MineChem.