xau/gold ratio screaming buy for gold miners ?

The Gold/XAU ratio is probably one of the single best determinants for the relative valuation of mining stocks - having signalled almost all the major turning points in the precious metals markets. Currently XAU (220) / Gold (1502) = 6.85 or there abouts. Miners are way undervalued.
The market always dislikes two things, undervalued stocks and overvalued stocks. Gold/Silver miners are by definition very undervalued.

XAU/Gold Valuation rule:

Since 1974 the Gold/XAU ratio has been above 5.0 about 15% of the time. At these levels, the XAU has followed with average annualized gains of 89.6% on average. When the ratio has been above 4.0, the XAU has obtain average annualized gains of 27.4%. But, when the ratio is below 3.0, the XAU has declined at an average annualized rate of -36.6%.