Rensselaer Semi-Weekly Republican, Volume 40, Number 65, Rensselaer, Jasper County, 17 April 1908 — Curious Changes In Opals. [ARTICLE]

Curious Changes In Opals.

Carious changes can be brought about in soms opals. There is one variety which is not transparent like the Mexican stones nor Cull of color like the prismatic kinds. Yet il it is given a drink —that Is, placed in water —it will develop one and sometimes both of these qualities.