Of all the beguiling families of gemstones, there stands one that radiates the kaleidoscope effect of nature—the opals. These iridescent jewels are considered magical, inspiring, emotionally ...

This is due to Bragg diffraction off the different layers in the opal, with different reflected photons interferring with each other. Asteroid 2024 YR4: More than 100 million people live in risk ...

black opal exhibits many different colors contrasted by a dark body tone. Frederick: It's simply the most stunning gemstone on the planet. It's just remarkably beautiful. You can put the thing ...