Fire opal, a rare and striking gemstone, when looked at closely, has a fiery life inside, thanks to the air and water trapped within during its formation. These stones are mined in Mexico - having ...

Opals are some of the most unique gemstones on Earth. They range from milky white to fiery red and deep blue-green, and all have a kaleidoscope of shimmering colors within, called play-of-color. Here ...