About Welo Opal
Welo opal is one of the many types of opal that come from Ethiopia and were first discovered in 1994. The original discovery was in the Menzgishe district of the north part of the Shewa province of Ethiopia. Found in rhyolite above a clay layer.
The full extent of the deposit is unknown because the opal bearing strata is overlain by 300 meters of overburden.