We celebrate our 50th episode with Matthew's favourite gem, that stone with the incredible, one of a kind play of colour that is Opal.

Known as the pride of Australia, it's a gemstone Alyce knows pretty well but she talks about how her initial perception has changed since when she was a kid growing up Down Under.

Listen to the end for the triumphant return of Gem Trivial Pursuit and find out who prevailed...

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A Tape Deck podcast