Opal's Origins in Nature Opal, often regarded as one of the most dazzling minerals, can develop within a variety of natural structures, including petrified wood, bones, and even seashells.

For nearly three weeks now, a photograph of a spectacular specimen of petrified wood has been going viral. It appears in at least 17 discussion groups on Reddit, one of which has more than 41,000 ...

Here's the science behind petrified wood, including what it is, how long it takes to form and whether it's useful in the research world.

This also cut off oxygen to the wood, preventing it from rotting. But over time, silica in the lava replaced the wood, turning it into agate, opal and quartz, creating a stone version of the original.

In 1966 whilst staying in the opal-mining area of Andamooka,South Australia, looking for opals around the mouth of an opal mine (noodling)I found an aboriginal stone cutting implement made from ...

A team of US scientists claims to have created petrified wood in just a few days, mimicking a natural process that normally takes millions of years. Researchers from Pacific Northwest National ...

Whilst staying in Andamooka, South Australia, in 1966, searching for opals around the mouth of an opal mine ('noodling')I found a small stone tool made from petrified wood.