Agree that fundamental case for gold is bullish since there are many applications that requires gold. Eventually, there will be an end to extracting gold from mother earth - unless synthetic gold could be invented. The secular bull market should be getting tired now after the super long run.
Personally I don't subscribe to the cycle indicator. Just look at SG property cycle. It used to be 7 years and now it is long overdue and still running.
Can't comment on SG property cycle. I just know its going up and going without stopping.
The investment case for gold is demand by central banks (CB's) and private individuals, not industrial use. CB's, especially EM CB's are accumulating gold as a hedge against currency depreciation and developed country CB money printing. Gold is also favourable when real interest rates are low, which will be the case for many years to come. The only worry i have is that gold usually spend 1/3 of its time in bull, and 2/3 in bear or consolidation. The bear mkt was 20 years long. The bull should only be 10. The secular bull is very long in the tooth by now.