CREATE TABLE table_203_385 (id DECIMAL, "material" TEXT, "formula" TEXT, "refractive\ index ( es ) \ 589.3 nm" TEXT, "dispersion\ 431 - 687 nm" DECIMAL, "hardness\ ( mohs'\ scale ) " TEXT, "density\ ( g/cm3 ) " TEXT, "thermal\ cond." TEXT, "state of\ the art" TEXT)

what material has a high thermal condition ?
SELECT "material" FROM table_203_385 WHERE "thermal\ncond." = 'high'
SELECT "material" FROM "table_203_385" WHERE "thermal\ncond." = 'high'