4.3 ct Solid Matrix opal from Andamooka

Item Information

Dimensions (mm) 12.3 x 9.5 x 5.5mm
Weight (carats) 4.3 carats

Bright ring stone. Solid matrix opal from Andamooka, Australia

Treatment: Carbonization

We are pleased to present you solid matrix opal from the Andamooka, Australia. Such opals are becoming increasingly rare, as only a few miners work at Andamooka opal fields now days. We buy rough material  directly from miners at the fields. We are processing matrix opals by ourselves, including cutting, cabbing, carbonization treatment and final polishing. Each matrix opal is subjected to multistage polishing on diamond wheels. The polishing of one matrix opal takes several times longer than polishing black or crystal opal. Matrix opals are very stable.

Solid Matrix Opals are worth more than other types of matrix opals, such as the Concrete and Sandstone Matrix. The picture shows the difference in the structure of these types of opals.

All photos were taken with a Pentax KP camera and a 35mm macro lens or an Olympus EM1 camera with a 30mm lens.

As a lighting, LED lamps with a warm spectrum are used. In order for the colors to be displayed correctly, the cameras are adjusted using a color map ColorChecker Passport.

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Pricing & Details

Bid Increment $1
Starting Bid $180
Auction ID 652213
Watchers 6 watching
Viewed 717 times
Starts 31st May 2018 12:05pm PDT
Ends 7th Jun 2018 12:14am PDT

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