Scientists have found opal-like crystals in the Tagish Lake meteorite, which fell to Earth in Canada in 2000. This is the first extraterrestrial discovery of these unusual crystals, which may have ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." How does a jeweler find the best way to showcase a selection of rare stones? For Monica Rich Kosann, ...

The gemstone opal could be manufactured synthetically copying a technique employed by a beetle to control the appearance of its outer shell. Researchers from the Department of Zoology at the ...

The illustrations at the top (steps A through D) depict the creation of 3-D "photonic crystals" to improve the efficiency of thin-film solar cells, a technology that could bring low-cost solar energy.

The world’s finest uncut opal, a 998-gram gem called the Fire of Australia, has gone on permanent public display for the first time since its discovery more than 60 years ago. Valued at more than $675 ...

How does a jeweler find the best way to showcase a selection of rare stones? For Monica Rich Kosann, whose high jewelry ...