Chalcedony includes minerals like agate, onyx, jasper, and heliotrope. Chalcedony has a waxy lustre and is usually translucent to opaque. Key characteristics of Chalcedony include its hardness (around ...

Located in the beautiful city of Jaipur, India, Stonescart began in 2000 as a quality stones manufacturer. It has been ...

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A pristine 400-year-old gold seal ring found by a metal detectorist in the Peak District could sell for tens of thousands of pounds at auction later this week. The high carat gold ring, which is set ...

The geochemistry of agate and chalcedony in volcanic rocks represents an intricate record of silica precipitation and crystallisation processes occurring under variable thermal and chemical conditions ...