prase
prase, translucent, leek-green variety of the silica mineral chalcedony (q.v.). Coloured by hornblende fibres and chlorite, it was used by the ancients for engravings. Prase has been found at numerous localities.
This article was most recently revised and updated by Amy Tikkanen.
Citation Information
Article Title:
prase
Website Name:
Encyclopaedia Britannica
Publisher:
Encyclopaedia Britannica, Inc.
Date Published:
04 January 2011
Access Date:
November 13, 2026