Hessonite Garnet | Gemopedia

Hessonite Garnet is a variety of grossular garnet found in two colorsgolden and cinnamon. Popular for thousands of years, ancient Greeks and Romans used it in jewelry, cameos and intaglios. Hessonite is slightly softer than other garnet varieties, but it is still hard enough to be cut and polished for jewelry use. Hessonite is frequently worn as a talisman and is believed to prevent bad things from happening in the wearers life.
Alternate
Names
Cinnamon Stone

Hessonite Garnet Classification

Common Name

Hessonite Garnet

Species

Grossularite

Variety

Hessonite Garnet

Colors

golden to dark orange

Alternate Names

cinnamon stone

Gemstone Groups

Group: Garnet

Key Separations

RI, SR nature and magnification.

Comments

Hessonite Garnet Optical Properties

Transparency

Transparent To Semitransparent

Refractive Index

1.74 Tolerance: (+0.020/-0.010)

Birefringence

Optic Character

NA

Optic Sign

NA

Polariscope Reaction

singly refractive, commonly with ADR (SR-ADR)

Fluorescence

SWUV: Inert to weak orange
LWUV: Inert to weak orange

CCF Reaction

Pleochroism

Dispersion

Strength: moderate fire Value: 0.28

Hessonite Garnet Chemistry & Crystallography

Chemical Name

calcium aluminum silicate

Chemical Formula

Ca3Al2(SiO4)3

Synthesis

Crystal System

Cubic

Classification

Silicate

Nature

Natural

Crystallinity

Crystalline

Hessonite Garnet Characteristic Physical Properties

Hardness

7 to 7.5

Streak

Specific Gravity

3.57-3.73 Typical: 3.61

Toughness

Good

Inclusions

Hessonite garnet is a type II clarity stone. Stones often contain zircon, apatite or calcite inclusions that have a rounded appearance. The "heat wave" or "scotch in water" effect is indicative of hessonite garnet.

Luster

Vitreous

Stability

Good

Fracture

Conchoidal To Uneven

Cleavage

None, Sometimes Distinct Parting

JTV on Google+
0 Items
My Wish List
Close
Item
Description
Qty.
Price


Estimated Order Total:
0
Total Due Today:
0
Close
Item
Description
Qty.
Price


Page of 1