Changes related to "Opalescence"
This is a list of recent changes to pages linked from a specified page (or to members of a specified category). Changes to pages on your watchlist are shown with a green bullet.
23 December 2014
- (diff | hist) . . Opal; 13:24 . . (+261) . . 18.104.22.168 (→Precious opal: Added practical limitations for gemstone use of precious opal - heat sensitivity due to water content and scratching widely recognized limitations but otherwise not covered in the article.)