Can anyone help me solve this mystery? What is this rock? It is very old and was in a box labeled extremely rare rocks. I have looked at thousands of rocks and minerals. The box also contained Indian artifacts and flint art.
Hard to really know, but I'd take a guess at an orange opal from the way it seems to be shimmering from the different photos. If you search for "rough orange opal" on any search engine, a lot of the rocks look similar.
Thank you, If this is an opal , I am buying everyone the first few rounds. I have had geologist that scratch their head on this one. It feals like marble...freaking weird
Sorry to be a party pooper! That is a piece of gelled up phenolic resin that went hard! We have around 4 tonnes of that wasted from a reaction that went south.
I looked at gelled up phenolic resin www.phenolicresin.org and i can not find a single match. I can not say you are in correct because I dont know what it is, but I had a geologist look at it and he is certain it is not glass and that it is a natural rock.
Loos like heliordor (beryl) but you should ask friendly stone nerds at http://www.mineral-forum.com/message-board/ or/and http://www.gemologyonline.com/Forum/phpBB2/index.php They will soon point you in the right direction.
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