200ct 56x41 Solid Rough Treated Fairy Opal [FOS-0023]

Item Information

Dimensions (mm) 56 x 41 x 12mm
Weight (carats) 200 carats

Stone Type: Treated Fairy Matrix Opal Rough

Stone Weight: 200ct

Stone Size: 56 x 41 x 12mm

Origin:  Opalton  QLD, Australia

Color:  Red, Orange, Yellow, Green, Blue

Brightness: B3

Shape: Freeform

Treating is similar to used with Andamooka matrix opal but instead cooked in sugar and burn in acid this opal is only burned in oil to turn light brown base to black and enhance color. Treatment usually 1-2mm deep but may go deeper. Cutting deeper may cause brown base come to surface and has to repeat burning process.

Very porous base opal makes it hard to polish. Clear coat is commonly used to make top shiny.


Picture and video taken stone wet to show full colour.


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$60 yoyodeux
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Pricing & Details

Bid Increment $1
Starting Bid $65
Auction ID 821459
Watchers 4 watching
Viewed 91 times
Starts 4th Nov 2019 5:32am PST
Ends 8th Nov 2019 11:07pm PST

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