As it appears on EQTraders.com, the recipe is as follows: Pear Cut Prestigiitase Palladium Ring (Jewelry 252) --Pear Mount Palladium Ring (crafted with Jewelcraft) --Pear Cut Prestigitase (crafted with Jewelcraft)
Pear Mount Palladium Ring (Trivial 202) --Pear Cut Ring Jewelry Mold --Prismatic Palladium Bar (Crafted with Jewelcraft)
Prismatic Palladium Bar (Trivial 26) --Gnomish Heat Source --Scale Ore
Jewelers Glass (Trivial 50) --Jewelers Glass Lens (Crafted with Jewelcraft) --Jewelers Glass Cup (Crafted with Jewelcraft)
Jewelers Glass Cup (Trivial 30) --Gnomish Heat Source --Silver Bar
Jewlers Glass Lens (Trivial 50) --Glass Disk (Crafted with Jewelcraft) --Grinding Powder (3)
Glass Disk (Trivial 30) --Gnomish Heat Source --Fine Sand
Did the best on the formatting that I could. The subcombines are also shown for everything but the pear cut tool. It seems to be a circular combine in which you combine another cutting tool, by itself in the jewelry kit, until you receive the desired tool.
You can buy the Square Cut Tool in: Freeport: -Ilenarn Ghaeaus @ 653, -527, in Arena building -Ennuard Yetaius @ 692, -530, in Arena building Plane of Tranquility: -Aelisian Taliz @ 885, -1750, Northern (bank) building of complex with Book to Plane of Knowledge West Freeport: -Amber @ -147 -1331 -136