Of course, in the good old days De Beers was the custodian – the trade steward – ruling as a dominant monopolistic drive. The collapse of Brisbane-based diamond tracing company Everledger – getting into liquidation with more than $AU19 million in debt – may assist the concept ‘movement’ around provenance is fleeting rather than permanent. The old ‘Supplier of Choice’ technique tried to get the sightholders to drive shopper demand; nonetheless, from my perspective, this was the mistaken method. This at present leaves a healthy and interesting margin for retailers, and many are having fun with the moment. While costs …