| http://www.w3.org/ns/prov#value | - They are a somewhat speculative investment with significant, long-lasting volatility even in a widely diversified basket.(The gold bugs' viewpoint, as I have heard it, is that gold is a ultimate touchstone of value, meaning that it neither appreciates nor depreciates, but rather holds still in the face of wild swings in the rest of the open macroeconomy.
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