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Ether to distinguish amber from copal resin


This thread is very interesting and worrying!

I am sure that many gemmologists, including me, would appreciate
it very much if anyone amongst the Orchid community would advise
us about the standard use of solvent ether as a method for
distinguishing amber from copal resin. Are there any effective
alternatives that are known to be user friendly and work?

Many thanks for any feedback.

Best wishes - Nick Sturman
(State of Bahrain, where no doubt the outside temperature is a risk in