Not a mere prediction but extrapolating forward.XAUUSD
From 1976 - 1980, Gold from the bottom of the leg to the top of the cycle has risen approx. 690% and took about 1,247 days to occur. It has then proceeded to trend sideways for 20 years until its next bull run which has played out for a little over 10 years. During these 10 years, the bottom of the leg to the top of this cycle also had approx. 670% gains, similar to the previous cycle. The trend sideways after the peak then trended sideways for 5 years, a 4th of the time it took from the previous cycle to trend sideways.
The time variable seems random to this current point to extrapolate forward but the percentage of the up-moves from cycle to cycle so far has a correlation of almost .95 - 1. A true sample study should have at least 15+ samples as we only have 2 cycles in which to gather correlation for BUT If this remains consistent and is extrapolated, the next cycles high for Gold is $8,000.