Faceted Opal Silver Ring

Opal is a natural gemstone, if exposed to sudden changes of temperature or knocked it can be brittle.
The safest recommendation therefore is to avoid ultrasonic or steam cleaning and simply use hand warm water and a bit of soap. Wash gently with a soft cloth or toothbrush and pat dry after. 

: The birthstone for October
: Opals are formed from rain seeping down crevasses in rock, when the water evaporates the silica left behind forms Opal.
: Australia is the principal source for Opals although they have also been found on Mars!
: Opallios 'to see a change of colour' in Greek. 
: Opaus a roman word meaning 'precious stone'
: Opal is considered a lucky stone having dispelled a once misplaced reputation for bad luck.