Rhodolite Garnet | Gemopedia

Unusually striking, rhodolite is a naturally occurring blend of almandite and pyrope garnet. While raspberry is the most prized color, rhodolite is also found in shades of pink through lavender, including the ruddy purples of its namesake, the rhododendron flower. Rhodolite is typically found as water-worn pebbles in alluvial deposits, but it is also occasionally mined directly from host metamorphic rock. Tough, durable, never enhanced and easily cleaned, rhodolite is ideal for jewelry. Due to its bright transparent clarity, rhodolite is often cut into fantasy shapes.
Colors
Light To Dark Purplish Red Through Reddish Purple

Rhodolite Garnet Classification

Common Name

Rhodolite Garnet

Species

Pyrope-Almandite

Variety

Rhodolite Garnet

Colors

Light To Dark Purplish Red Through Reddish Purple

Alternate Names

Gemstone Groups

Garnet

Key Separations

RI, SR nature and spectrum.

Comments

Stones are only rhodolite garnet if there is a purple component to the color.

Rhodolite Garnet Optical Properties

Transparency

Transparent

Refractive Index

1.75-1.78

Birefringence

Optic Character

NA

Optic Sign

NA

Polariscope Reaction

Singly Refractive (SR) With ADR

Fluorescence

SWUV: Inert
LWUV: Inert

CCF Reaction

Pleochroism

None

Dispersion

Strength: moderate fire Value: 0.022

Comments

Rhodolite Garnet Chemistry & Crystallography

Chemical Name

magnesium iron aluminum silicate

Chemical Formula

((Mg,Fe)3AL2(SiO4)3)

Synthesis

Crystal System

Cubic

Classification

Silicate

Nature

Natural

Crystallinity

Crystalline

Comments

Rhodolite Garnet Characteristic Physical Properties

Hardness

7-7.5

Streak

White

Specific Gravity

3.74-3.94 Range:0.1/-0.1 Typical:3.84

Toughness

Good

Inclusions

Rhodolite garnet is a type II clarity stone. Needle like inclusions, zircon crystals with stain halos and irregular rounded included crystals that might be zircon or apatite.

Luster

Vitreous

Stability

Good

Fracture

Conchoidal

Cleavage

None

Comments

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