mineral
Decorative mosaic cross containing mixed rock and glass fragments
Polychrome aggregate; likely quartz, feldspar, marble, granite, and assorted colored glass
AI-generated identification · may be incorrectPolished and irregular fragments embedded in grout or resin; colors are highly varied with vitreous to subvitreous luster. Hardness is mixed, approximately Mohs 3–7, and there is no single crystal structure or cleavage.
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Physical properties
Polished and irregular fragments embedded in grout or resin; colors are highly varied with vitreous to subvitreous luster. Hardness is mixed, approximately Mohs 3–7, and there is no single crystal structure or cleavage.
Formation & geological history
This is a human-assembled artwork rather than one natural rock. The fragments originate from diverse geological materials formed at different times and in igneous, metamorphic, and sedimentary environments; some bright pieces may be man-made glass.
Uses & applications
Primarily religious or decorative wall art; individual mineral fragments may also be used in jewelry, countertops, mosaics, and ornamentation.
Geological facts
The specimen cannot be assigned one rock name because it is a composite mosaic. A cross-shaped arrangement and contrasting reflective fragments are characteristic of decorative mosaic or smalti-style artwork.
Field identification & locations
Identify components by testing separate fragments: glassy quartz scratches glass, calcite fizzes weakly in acid, and feldspar commonly shows two cleavage directions. Commonly found as commissioned interior décor rather than a geological field specimen.
