Mineral Monday is a weekly video series exploring the many amazing minerals, fossils, and historic objects on display at the W.M. Keck Earth Science and Mineral Engineering Museum as told by museum ...

And why is it so expensive? Black opal is one of the most enchanting stones in the world, sought after for its seemingly infinite display of colors. Compared to common opal, which is usually one ...

Scientists have discovered a completely new type of opal formed by a common seaweed which harnesses natural technology by self-assembling a nanostructure of oil droplets to control how light ...

Press release issued: 17 April 2018 Scientists have discovered a completely new type of opal formed by a common seaweed which harnesses natural technology by self-assembling a nanostructure of oil ...

FELTON — An amateur miner hopes to sell what he believes is one of the largest common fire opals in America uncovered near his farm in Idaho. Jim Hartrim, a local gem jeweler, was tending his ...