  We present spiral resonators of thin film niobium (Nb) that exhibit large
geometric inductance, high critical magnetic fields and high single photon
quality factors. These low loss geometric inductors can be a compelling
alternative to kinetic inductors to create high-impedance superconducting
devices for applications that require magnetic fields. By varying the spiral
pitch, we realize resonators with characteristic impedances ranging from
3.25-7.09 k{\Omega}. We measure the temperature and magnetic field dependent
losses and find that the high-impedance resonators maintain an intrinsic
quality factor above {\sim} 10^5 for parallel magnetic fields of up to 1 T.
These properties make spiral Nb resonators a promising candidate for quantum
devices that require circuit elements with high impedance and magnetic field
resilience.
