Carnelian

Carnelian, sometimes spelled cornelian, is a red or reddish-brown variant of chalcedony. Similar to carnelian is sard, which is generally harder and darker.

Carnelian was used widely during Roman times 2,000 years before the present era to make signet or seal rings for imprinting a seal with wax on correspondence or other important documents. Hot wax does not stick to Carnelian.

The word carnelian is derived from the Latin word meaning horn, in reference to the flesh color sometimes exhibited.

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