The single crystal Tm-3(+):Ca10Li(VO4)(7) with dimensions of empty set 23 x 25 mm(3) was grown by Czochralski method. It's thermal and spectroscopic properties were investigated. The thermal expansion coefficient alpha(a) is 1.671 x 10(-5) K-1 and alpha(c) is 1.462 x 10(-5) K-1. The absorption cross-sections at 794 nm are 2.43 x 10(-20) cm(2) and 1.04 x 10(-20) cm(2) for pi- and sigma- polarization, respectively. The largest stimulated emission cross-section corresponding to the F-3(4) -> H-3(6) transition of Tm3+ ions, is 1.92 x 10(-20) cm(2) at 1883 nm for pi- polarization and 1.69 x 10(-20) cm(2) at 1917 nm for sigma- polarization. The fluorescence lifetime is 1.05 ms. The broad and smooth gain profile from 1750 nm to 2010 nm means that Tm3+:Ca10Li(VO4)(7) is a potential laser crystal for tunable and ultrashort pulse lasers near 2 mu m.