Rock Identifier
Polished ruby-in-fuchsite or crackle quartz specimen (Likely quartz (SiO₂) with red iron-oxide inclusions; exact identification requires testing) — gemstone
gemstone

Polished ruby-in-fuchsite or crackle quartz specimen

Likely quartz (SiO₂) with red iron-oxide inclusions; exact identification requires testing

AI-generated identification · may be incorrect

Translucent deep red, glassy luster, irregular internal fractures and possible inclusions; quartz hardness is 7 Mohs, with no obvious cleavage and trigonal crystal structure. The triangular polished shape and surface gloss indicate lapidary processing.

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Physical properties

Translucent deep red, glassy luster, irregular internal fractures and possible inclusions; quartz hardness is 7 Mohs, with no obvious cleavage and trigonal crystal structure. The triangular polished shape and surface gloss indicate lapidary processing.

Formation & geological history

Quartz forms in hydrothermal veins and cavities, commonly during cooling of silica-rich fluids; red coloration may come from hematite, iron oxides, or included ruby/corundum. The specimen’s precise geological age and locality cannot be determined from the image.

Uses & applications

Used as a decorative cabochon, jewelry component, or collector specimen. Value depends strongly on whether the red material is ruby, dyed quartz, resin-filled quartz, or iron-stained quartz.

Geological facts

The pronounced fracture network may represent natural crackle quartz, which is sometimes heat-treated and dyed to intensify color. Visual identification alone cannot distinguish natural coloration from treatment.

Field identification & locations

Common possibilities include crackle quartz sold as “dragon vein” or “fire quartz”; test hardness, specific gravity, loupe inclusions, and dye concentration along cracks. Common source regions include Brazil, Madagascar, India, and China.