We have succeeded in crystallizing LaBGeO 5 glass with an 800nm, 250kHz repetition rate femtosecond laser and observed different crystallization behavior when varying focal depth. Despite glass and crystal having the same composition, an unidentified off-stoichiometric phase appeared before crystalline LaBGeO 5 when focusing deep inside the glass. Crystal lines were written in three dimensions inside the glass, and the results were compared to 1064nm continuous-wave laser crystallization of Sm-doped LaBGeO 5 by samarium atom heat processing. Notable differences were found in the structure of the lines and crystal growth rates, with femtosecond laser crystallization requiring much higher writing speeds. Raman spectra were highly consistent, suggesting that the lines were highly oriented with a consistent alignment between the crystal lattice and the growth direction.