Ruby-In-Zoisite | Gemopedia

Ruby in zoisite is a translucent to opaque rock composed of ruby crystals, green zoisite and black hornblende. The official name for this gem is "anyolite," from the Masai word anyoli, meaning "green." This gem is usually used as an ornamental stone due to its stunning color contrasts.
Alternate
Names
Anyolite
Colors
Purplish Red In Green, Black Matrix

Ruby-In-Zoisite Classification

Common Name

Ruby-In-Zoisite

Species

Corundum and Zoisite

Variety

Colors

Purplish Red In Green, Black Matrix

Alternate Names

Anyolite

Gemstone Groups

Key Separations

Appearance and RI

Comments

Some areas might have a 1.700 RI if tested in green zoisite matrix.

Ruby-In-Zoisite Optical Properties

Transparency

Translucent - Opaque

Refractive Index

1.76-1.77

Birefringence

Optic Character

Optic Sign

Polariscope Reaction

Aggregate (AGG)

Fluorescence

SWUV: Inert
LWUV: Inert

CCF Reaction

Pleochroism

None

Dispersion

Comments

Ruby-In-Zoisite Chemistry & Crystallography

Chemical Name

aluminum oxide and calcium aluminum silicate hydroxide

Chemical Formula

Al2O3 and Ca2Al3(SiO4)3(OH)

Synthesis

Crystal System

Trigonal

Classification

Silicate

Nature

Natural

Crystallinity

Aggregate

Comments

Ruby-In-Zoisite Characteristic Physical Properties

Hardness

Streak

Specific Gravity

3.1-3.4

Toughness

Inclusions

Ruby areas might show hexagonal outline.

Luster

Vitreous

Stability

Fracture

Uneven

Cleavage

None

Comments

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