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ebay "black opal"

pokerface

Brilliant_Rock
Joined
Sep 12, 2011
Messages
892
Found this posting on ebay for a black opal, selling at a minimum price:


blackopal_0.jpg

I've never seen an opal like it, if it is an opal at all. Any thoughts on what this stone could be? I actually kinda like it.
 

pokerface

Brilliant_Rock
Joined
Sep 12, 2011
Messages
892
edit: i'm guessing this is a mosaic triplet opal, hence the price.
 

cm366

Shiny_Rock
Joined
Oct 5, 2011
Messages
434
It's a mosaic triplet, which is to say it's chips of opal glued together on a dark slice of rock and then covered with quartz, but it's not well done - you shouldn't be able to see big honking gaps between the chips. It's not 'black opal' by any stretch of the imagination, either...

Here're some mosaics that are relatively well done and priced at retail - Murray's got good material, too.

http://www.australianopalmines.com/cuts/mosaics/mosaics.html
 
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