This is why basic opsec is paramount. Showing off your collection or jewelry for internet points is foolish, IMO. There is no anonymity on reddit except for the muggles. Palantir knows who you are, which means likely local law enforcement, ICE, the criminals who work for the government and corporations know exactly who you are.
In subreddit r/Gold
In a post titled:
Be careful out thereespecially if you have an extensive collection of gold and booze worth nearly half a million dollars.