
Ceramic or Polished Stone Heart (Anthropogenic Material)
Glazed Ceramic (Silicon Dioxide based coating on Alumina Silicate body) or Polished Limestone/Marble (Calcium Carbonate, CaCO3)
Hardness: 3-5 (Mohs scale), Color: Creamy white with printed graphics, Luster: Vitreous/Glazed, Structure: Amorphous (surface) to Microcrystalline (body), Cleavage: None/Conchoidal fracture.
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