Assertion: matrix opal | /r/HasProperty | enhanced
Facets:
value: by soaking the specimen
type: MANNER
Source sentences:
text: Andamooka matrix opal is a porous material from Andamooka,South Australia, Which may be enhanced by soaking the specimen in a sugar solution and then boiling in acid to deposit carbon in the available pore spaces, resulting in a dark background.or Mullers Glass, is a colourless opal which gives the appearance of glass.
text: Andamooka matrix opal may be enhanced by soaking the specimen in a sugar solution and then boiling in acid to deposit carbon in the available pore spaces, resulting in a dark background.