1592953194000 1312632483000 term-37670 1616541543575 1312632529000 1616290518011 adlib fitz-online adlib-term-37670 e0557c37-b4ad-3c8d-acbc-8afa0798a983 2 1 scope note A velvety-black variety of cryptocrystalline quartz, siliceous shale, or similar substance used by jewelers for testing the purity of precious metal, especially gold. ROCKS M.MT.AFU.AFU.AFU.ERE.ARI.AFU.AXC.AFU.AFU 1 code M.MT.AFU.AFU.AFU.ERE.ARI.AFU.AXC.AFU.AFU 1 touchstone reference term-37667 adlib-term-37667 25333a15-9f49-3c2c-b74f-e30ce05fc950 flint touchstone term