UPDATE: Some chatter that the earlier drop occurred around a story on the overhauling the London Gold fix (amid all the manipulation talk).
With no apparent news - who needs news - the precious metals market participants have decided that now is the time to sell, sell, sell in huge volume and all of a sudden... Gold is down 1.3% - its biggest drop in a month; and silver is down 2.8% - its biggest drop in 5 weeks. Gold has dropped back down to test its 50DMA and silver has crossed back down through it. Bonds are modestly bid, stocks ar enot moving on this collapse and the USD is hardly budging.
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