Seraphinite | Gemopedia

Seraphinite was named after Seraphim, the highest rank of angels in the Bible, due to the feather-like appearance of its chatoyant fibers. The stone usually has a dark green to gray color with silvery shimmer caused by mica inclusions. This unique, somewhat mystic-looking gem is often used for carvings, decorative pieces and cut as cabochons.
Colors
Dark Green To Gray

Seraphinite Classification

Common Name

Seraphinite

Species

Clinochlore

Variety

Seraphinite

Colors

Dark Green To Gray

Alternate Names

Gemstone Groups

Key Separations

RI and appearance.

Comments

Named after the Seraphim because the chatoyant fibers that make up the stone look like feathers.

Seraphinite Optical Properties

Transparency

Transparent - Translucent

Refractive Index

1.571-1.597

Birefringence

0.005-0.011

Optic Character

Biaxial

Optic Sign

Positive or Negative

Polariscope Reaction

Doubly Refractive (DR)

Fluorescence

SWUV: Inert
LWUV: Inert

CCF Reaction

Pleochroism

Unobservable

Dispersion

Strength: none

Comments

Seraphinite Chemistry & Crystallography

Chemical Name

magnesium iron aluminum silicate hydroxide

Chemical Formula

(Mg,Fe2+)5Al(Si3Al)O10(OH)8

Synthesis

Crystal System

Monoclinic

Classification

Silicate

Nature

Natural

Crystallinity

Aggregate

Comments

Seraphinite Characteristic Physical Properties

Hardness

Streak

Specific Gravity

2.6-3.02

Toughness

Inclusions

Mica inclusions give seraphinite a silvery and feathery shimmer.

Luster

Pearly

Stability

Fracture

Uneven

Cleavage

Perfect, in one direction

Comments

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