Opal probably originate from Sanskrit word "upala" meaning "valuable stones". This was probably the root for the Greek term "opallios", which translates as "color change".
Opal is hydrated silicon dioxide that shows a range of color flashes, usually including red, blue, green, and violet.
"Ethiopian Welo Opals" are mined at attitude 3,200 meters above sea level, the raw crystals are mined 300 metres below the edge of an exposed cliff face and are all been extracted from the earth by hand. Unfortunately very soon we believe this deposit will be "mined out". In fact we are already seeing a huge drop off in availability of this stunning gemstone.These Opals posses a fascinating and mesmerising "play of color".This discovery of Ethiopian Opal at the Delanta mines in the Wollo province was first made in 2008 and that quality of gems uncovered regularly surpasses the quality found in Australia and Brazil.