Provided is a device of a high-frequency resonator using Lamb wave type elastic wave having excellent frequency temperature characteristics, the device having a significantly small frequency change.The Lamb wave type elastic wave device has an interdigital transducer for generating at least one Lamb wave type elastic wave, or the interdigital transducer and a reflector, arranged on a quartz substrate. The cut angle of the quartz substrate and a propagation direction of the Lamb wave type elastic wave expressed in Euler angles (λ, μ, θ) satisfy any one of following expressions (Expressions 1 to 3). λ=90°, μ=17° to 21° or μ=159° to 163°, θ=0° to 10°  (Expression 1) λ=210°, μ=17° to 21° or μ=159° to 163°, θ=0° to 10°  (Expression 2) λ=330°, μ=17° to 21° or μ=159° to 163°, θ=0° to 10°  (Expression 3)