Bowenite | Gemopedia

One of the most common serpentine varieties in the gem trade is bowenite, one of the hardest of the serpentine minerals. It is a massive variety of antigorite that ranges from blue-green to green and green to yellow. It is translucent to semi-translucent, and has been used in various types of jewelry, as well as in decorative and ornamental applications.
Colors
Light To Dark Apple Green Often Mottled With White Cloudy Patches

Bowenite Classification

Common Name

Bowenite

Species

Antigorite

Variety

Bowenite

Colors

Light To Dark Apple Green Often Mottled With White Cloudy Patches

Alternate Names

Gemstone Groups

Serpentine

Key Separations

RI, magnification, spectrum, appearance and surface condition.

Comments

Misnomer: Korean jade

Bowenite Optical Properties

Transparency

Translucent

Refractive Index

1.53-1.575

Birefringence

Optic Character

Biaxial

Optic Sign

Negative

Polariscope Reaction

Aggregate (AGG)

Fluorescence

SWUV:
LWUV:

CCF Reaction

reddish if dyed

Pleochroism

Unobservable

Dispersion

Comments

Bowenite Chemistry & Crystallography

Chemical Name

hydrous magnesium iron phyllosilicate

Chemical Formula

(Mg,Fe)3Si2O5(OH)4

Synthesis

Crystal System

Monoclinic

Classification

Silicate

Nature

Natural

Crystallinity

Microcrystalline

Comments

Bowenite Characteristic Physical Properties

Hardness

5-5.5

Streak

White

Specific Gravity

2.58-2.8

Toughness

Poor

Inclusions

Bowenite might show greenish sparkiing chlorite inclusions and often shows scratches and poor polish due to low mohs hardness.

Luster

Waxy

Stability

Fracture

Uneven, Granular, Splintery

Cleavage

Perfect, in one direction

Comments

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