Unakite | Gemopedia

Unakite is a type of granitic rock that features mottled patterns of green epidote, white to gray quartz, and pink feldspar, occasionally with black veining. This compact, hard gem is most often seen as cabochon gems, carvings and beads or sold as tumbled rough.
Colors
Green, White To Gray, Pink Mottled Appearance Sometimes With Black Veining

Unakite Classification

Common Name

Unakite

Species

NA

Variety

Colors

Green, White To Gray, Pink Mottled Appearance Sometimes With Black Veining

Alternate Names

Gemstone Groups

Key Separations

appearance

Comments

Stone can have a spot RI between 1.74 to 1.76 or 1.52 to 1.54 depending on which area is tested.

Unakite Optical Properties

Transparency

Opaque

Refractive Index

1.729-1.768

Birefringence

Optic Character

NA

Optic Sign

NA

Polariscope Reaction

Aggregate (AGG)

Fluorescence

SWUV: Inert
LWUV: Inert

CCF Reaction

Pleochroism

None

Dispersion

Strength: none

Comments

Unakite Chemistry & Crystallography

Chemical Name

Chemical Formula

Rock composed of green epidote, pink feldspar and white to gray areas of quartz

Synthesis

Crystal System

NA

Classification

Rock

Nature

Natural

Crystallinity

Aggregate

Comments

Unakite Characteristic Physical Properties

Hardness

6-7

Streak

Specific Gravity

2.85-3.2 Typical:3

Toughness

Fair

Inclusions

Unakite has a mottled green and pink appearance with black, white or gray veining.

Luster

Vitreous

Stability

Fracture

Granular, Uneven

Cleavage

None

Comments

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