metamorphic
Ruby in Zoisite (Anyolite)
Ruby-Zoisite
Hardness varies due to components (Ruby is 9, Zoisite is 6.5 on the Mohs scale); Color is a striking combination of green zoisite, black hornblende, and pink/red ruby crystals; Luster is vitreous to pearly; Crystal structure is orthorhombic (zoisite) and trigonal (ruby); Specific gravity is around 3.35 to 3.38.
Identified More metamorphic →
Explore Ruby in Zoisite (Anyolite) in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness varies due to components (Ruby is 9, Zoisite is 6.5 on the Mohs scale); Color is a striking combination of green zoisite, black hornblende, and pink/red ruby crystals; Luster is vitreous to pearly; Crystal structure is orthorhombic (zoisite) and trigonal (ruby); Specific gravity is around 3.35 to 3.38.
Formation & geological history
Formed through metamorphic processes in high-grade metamorphic rocks and pegmatites, often found in Tanzania where the green zoisite matrix and red ruby crystals grow together under high pressure and temperature.
Uses & applications
Widely used in ornamental carvings, lapidary arts, beaded jewelry, and collected as a decorative specimen due to its unique color contrast.
Geological facts
Also known as Anyolite, this name is derived from the Maasai word 'anyoli,' meaning green. The stone was first discovered in the Longido mining district of northern Tanzania in 1954.
Field identification & locations
Easily identified by the distinct visual combination of opaque green zoisite speckled with vibrant pinkish-red corundum (ruby) and dark hornblende inclusions. Primarily sourced from Tanzania.
More like this
