OPAL (DUDHIYA PATTHAR)

Opal (Dudhiya Patthar) is a form of silica that forms amorphously and hydrates.
It forms under relatively low temperatures and can fill cracks in various types of rock.
Experts believe the term “opal” comes from the Sanskrit word “upala,” which means “jewel.”
Manufacturers categorize opals into two main types: precious opal and common opal.
Precious opal is famous for its play-of-color or iridescence, whereas common opal does not show this feature.
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