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Description:A very showy and highly unusual pseudomorph from the famous basalt flows of Irai, Brazil. Sparkly, purple to brownish-purple amethyst has pseudomorphed (casted) a very large, 9.5 cm, hexagonal, pokerchip calcite crystal! Smaller pseudos add character to this dramatic piece, which is hollow and lightweight for its size! Rare, large, size for this material, unusual in its good condition! Ex Robert Nowakowski Collection. valued $750-ish