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Vivid orange Heulandite crystals with bright
The Democratic Republic of Congo is currently the world’s best-known source of high-quality gem-grade malachite with bold banding and vivid coloration
pyrite ball
This specimen formed in gas cavities (vesicles) within ancient basaltic lava flows
Unlike uniform gemstones
Bivalve (Pelecypoda) Fossil Sea Shell with Chalcopyrite | Mineralized Fossil Specimen | Indonesia Dogtooth Vivid orange Heulandite crystals withThis exceptional bivalve (Pelecypoda) fossil sea shell from Indonesia is a striking fusion of deep geological time and mineral transformation. Once a living marine organism, this shell has been preserved through fossilization and later enhanced by the natural crystallization of chalcopyrite, creating a stunning contrast between ancient biological form and metallic mineral growth. The fossil retains clear bivalve morphologyribbing, curvature, and shell
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