Opal, the company famous for making a fancy webcam, has pivoted to making other consumer electronics. Fueled by big ...

#opal #opal #worldrecord This is the largest solid opal in the world! Coming in at over 44,000 carats, it puts it as the ...

OPAL Fuels Inc. recently announced that construction has begun on two jointly owned renewable natural gas facilities with GFL ...

Following is a transcript of the video. Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy.