Gems in the display case, call it a rock-a-thon
Gems, also known as gemstones, are minerals that, when polished are used to make jewelry. Though most gems are minerals, few rocks also fall into the gemstone category. A rock-a-thon implies that there are many gems, further implying that he is very rich.
Ghostface must have learned a thing or two from Bill Nye as did the rest of us.
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