metamorphic

Ruby-in-Fuchsite cabochon/tower

Corundum (ruby, Al₂O₃) in fuchsite-bearing mica schist; commonly with chromite and quartz

AI-generated identification · may be incorrect

Polished, elongated hexagonal-point specimen with deep red translucent ruby areas in a sparkly green matrix. Ruby hardness is Mohs 9; fuchsite/mica is about 2–3, producing contrasting luster and texture; overall specific gravity is variable.

Identified September 21, 2026More metamorphic →

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Physical properties

Formation & geological history

Typically formed by metamorphism of aluminum-rich rocks, with chromium producing ruby’s red color. Commercial material is especially associated with India, and similar ruby-in-fuchsite occurs in parts of East Africa; exact age depends on locality.

Uses & applications

Used mainly as a decorative stone, lapidary material, pendant, or collector specimen. The ruby is usually included and opaque, so it has limited faceting or high-jewelry value.

Geological facts

The green matrix is commonly chromium-rich fuchsite mica, while dark grains may be chromite or biotite. This is not ordinary ruby gemstone rough because the ruby is heavily included and attached to matrix.

Field identification & locations

Identify by the vivid ruby-red patches, glittering green micaceous matrix, and strong contrast; mica flakes may catch light on fresh surfaces. The reported Puget Sound location makes locally collected material more likely to be glacially transported than formed in place; a purchased imported specimen is also plausible.