"""What constitutes a precious stone is the question which, at the onset, rises in the mind, and this question, simple as it seems, is one by no means easy to answer, since what may be considered precious at one time, may cease to be so at another. There are, however, certain minerals which possess distinctive features in their qualities of hardness, colour, transparency, refractability or double refractability to light-beams, which qualities place them in an entirely different class to the minerals of a metallic nature. These particular and non-metallic minerals, therefore, because of their comparative rarity, rise pre-eminently above other minerals, and become actually ""precious."""""
By:
John Mastin Imprint: Blurb Dimensions:
Height: 229mm,
Width: 152mm,
Spine: 6mm
Weight: 145g ISBN:9781034143628 ISBN 10: 103414362X Pages: 90 Publication Date:26 June 2024 Audience:
General/trade
,
ELT Advanced
Format:Paperback Publisher's Status: Active