chalcedony meaning in Hindi

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Well known types of Chalcedony are Carnelian, Agate and Onyx.
The carnelian is a siliceous stone and a species of chalcedony.
Chalcedony has a waxy luster, and may be semitransparent or translucent.
Chalcedony was once thought to be a fibrous variety of cryptocrystalline quartz.
This petrification process generally results in a quartz chalcedony mineralization.
Chrome chalcedony disappeared from use sometime in the 2nd century.
The color of chalcedony sold commercially is often enhanced by dyeing or heating.
Artificial onyx types have also been produced from common chalcedony and plain agates.
Chrome chalcedony was widely used in jewellery and seals throughout the Roman Empire.
The fossils are hosted in chalcedony rich sedimentary rock.

noun.