411 REFERENCE · Wiktionary
Labrador stone
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Noun
~
en now rare Labradorite; Labrador spar. from 18th c.
en 1791 w:Erasmus Darwin The Economy of Vegetation J. Johnson 120 The beautiful prismatic colours seen on the Labrodore stone are owing to a similar cause, viz. the thinness of the laminæ of which it consists .