Definition: "Antisilverite" refers to a rare mineral found in some rocks, primarily formed in the Earth's crust by radioactive decay. This unique type of rock crystal contains small, silver-colored crystals called silverites. Antisilverite has no silver but instead contains calcium and magnesium ions, forming tiny crystals that do not reflect light like pure silver. The term "antisilverite" is a play on words from the Bible, where "silver" (symbolic of gold) appears as an alternative to "platinum" (symbolic of gold), suggesting an alternate form of precious metal in ancient times.