Dan Tiernan: Quartz and All review – a furious comedy show about healing crystals

Monkey Barrel Comedy, Edinburgh The frenetic Mancunian turns to quartz in search of inner peace – but his standup remains as crude and self-loathing as ever I’ve seen two prominent comedians on this year’s fringe argue that your belief system is something you choose. Sign of the strange times, or just a way to justify some far-out comedy? Dan Tiernan’s show is certainly an extreme experience, as he discusses his interest – his faith, supposedly – in healing crystals. Rose quartz for calm, black tourmaline for grounding. Hard not to remark that neither seems to be doing its job well. Tiernan is

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