Andamooka rough opal - 22,91ct
Size ca.23x16x12mm
Andamooka rough stone with sparkling blue, green, and purple areas.
The Andamooka Matrix Opal has been "carbonized" by me. A process in which the rough stone is placed in a glucose solution, and this glucose is then carbonized in a heating process. This gives the stone a dark base to show off the opal inclusions. The rough stone is light gray to white and therefore the opal layers are barely visible without treatment.
The carbonization is permanent. Due to the porous surface of the stone, these types of opals are difficult to polish!
The stone was PHOTOGRAPHED AND FILMED IN WET CONDITION!
