In this study, Yb3+:Ca3NbGa3Si2O14 (Yb3+:CNGS) single crystals with different doping concentrations (2 and 5 at%) were grown using the Czochralski method. The dielectric, elastic, and piezoelectric coefficients at room temperature and elevated temperature were measured and calculated according to the impedance method for the first time. Crystals show excellent piezoelectricity and exhibit favorable temperature stability from room temperature to 800 degrees C. The transmittance spectrum of the Yb3+ :CNGS crystals is also recorded, and the results prove the high optical quality of these crystals.