One way is when the biggest chart change is the up sloping 50dma and flatting of the 200dma. Gold hasn’t been over the 200 dma in almost a year. Once the 50 crosses over the 200, and they are both up sloping, the bear market is OVER…
http://stockcharts.com/h-sc/ui?s=$GOLD&p=D&yr=3&mn=0&dy=0&id=p31099154664