gemstone

Red cabochon gemstone ring, likely garnet

Possibly almandine garnet, Fe₃Al₂(SiO₄)₃; identity cannot be confirmed from the image alone

AI-generated identification · may be incorrect

The smooth, oval, deep-red cabochon has a vitreous-to-resinous appearance. If garnet, hardness is about 7–7.5 Mohs and its crystals belong to the cubic system; the setting obscures diagnostic features.

Identified October 7, 2026More gemstone →

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Physical properties

Formation & geological history

Garnets form in metamorphic rocks and some igneous rocks; almandine commonly develops during regional metamorphism. The image cannot establish the stone’s age or source.

Uses & applications

Set in jewelry; garnet is also used as an abrasive and, in some varieties, as a gemstone for collecting.

Geological facts

Red garnets are often confused with ruby, spinel, and glass; gemological testing is needed for a reliable identification.

Field identification & locations

The ring and oval cabochon cut are visible, but color alone cannot identify the stone. A gemologist can distinguish garnet using refractive-index and other tests; garnets occur worldwide.