Agate is a banded variety of chalcedony, a form of quartz that grows in masses rather than points. Although chalcedony with inclusions may also be called agate, like moss agate. Metaphysically agate is associated with friendship, balancing relationships, and mental clarity; abundance, empowerment, and spiritual protection; health, longevity, and endurance.
Agate plays well with:
Jaspers (Ocean Jasper, red jasper, polychrome jasper)
Quartz (amethyst, citrine, rose quartz, smoky quartz)