Jarosite, from Cyprus, PY 43

Lemon Yellow Ochre is the purest naturally occurring yellow ochre — lighter and cleaner than the deeper-toned French ochres. Mined from Cyprus, this rare earth fell out of production due to the island's long-running political instability, but small-batch hand-harvesting has recently resumed. While comparable deposits may exist elsewhere, Cyprian Limonite has long held a singular reputation for its exceptional clarity of hue.