Interesting rough. Thanks.
|Dimensions (mm)||67 x 44 x 45mm|
|Weight (carats)||122 carats|
This is a piece of natural rough opal i purchased on my last trip to Banten. This material is not suitable for cutting and best as a specimen. . On the body tone scale the rating for this material is N21so its quite naturally dark. This material has been treated by heating in sand with oil Note.I suspect they have also added a resin to get a finish.The finish could be improved by placing in a vibrating tumber with polishing powder.
We have taken a photo of the stone with no water
|Starts||1st Apr 2016 9:24pm PDT|
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