gemstone
Ruby in Quartz
Corundum in Quartz (Al2O3 in SiO2)
AI-generated identification · may be incorrectHardness of 9 for ruby and 7 for quartz on the Mohs scale. Displays a vitreous luster with distinct red corundum crystal inclusions within a milky to clear quartz matrix.
Identified More gemstone →
Explore Ruby in Quartz in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 9 for ruby and 7 for quartz on the Mohs scale. Displays a vitreous luster with distinct red corundum crystal inclusions within a milky to clear quartz matrix.
Formation & geological history
Formed through high-pressure metamorphic and igneous processes where chromium-rich corundum becomes embedded in growing quartz crystal matrices.
Uses & applications
Used primarily in fine jewelry, ornamental carvings, and as collectible lapidary specimens.
Geological facts
This striking combination is relatively rare, as ruby and quartz rarely crystallize together naturally in such distinct formations.
Field identification & locations
Easily identified by the stark contrast of vivid red corundum inclusions trapped inside a translucent quartz host stone. Commonly sourced from India and Madagascar.
More like this
Other gemstone specimens
Ammolite
Ammolite (Biogenic Aragonite with trace elements; fossils of Placenticeras meeki and Placenticeras intercalare)
mineral
Gemstone Ring
N/A - Set piece of jewelry, likely Amethyst or Garnet with Diamond or CZ
gemstone
Topaz
Al2SiO4(F,OH)2
mineral
Amber
Succinite (Organic Gemstone)
mineral
Diamond and Gold Jewelry
Carbon (Diamond) / Au (Gold)
gemstone
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary