Larvikite | Gemopedia

Larvikite is a feldspar-rich igneous rock, called a monzonite and is named for the town in Norway where it was found. One characteristic of this stone is its unique iridescence, caused by the presence of interlocking feldspar crystals within the structure of the stone. Through the wonders of nature, each polished gem has a sheen that sparkles with deep silver tones. Usually, this stone is used in ornamental and decorative purposes.
Alternate
Names
Norwegian Pearl Granite And Royal Blue Pearl Granite
Colors
Bluish Gray, Greenish Blue Gray, Sometimes with Golden Brown Overtone

Larvikite Classification

Common Name

Larvikite

Species

Larvikite

Variety

Colors

Bluish Gray, Greenish Blue Gray, Sometimes with Golden Brown Overtone

Alternate Names

Norwegian Pearl Granite And Royal Blue Pearl Granite

Gemstone Groups

Key Separations

Appearance

Comments

Larvikite comes from Larvik, Norway and is a igneous rock that contains mostly feldspar but can also contain olivine, titanian augite, titanian magnetite, apatite and quartz. Misnomers: blue granite or birds eye granite.Norwegian Pearl granite: lighter variety of lakvikite.Royal blue pearl granite: darker variety of lakvikite.

Larvikite Optical Properties

Transparency

Transparent - Opaque

Refractive Index

Birefringence

Optic Character

Optic Sign

Polariscope Reaction

Fluorescence

SWUV:
LWUV:

CCF Reaction

Pleochroism

None

Dispersion

Comments

Larvikite Chemistry & Crystallography

Chemical Name

Chemical Formula

Synthesis

Crystal System

NA

Classification

Rock

Nature

Natural

Crystallinity

Aggregate

Comments

Larvikite Characteristic Physical Properties

Hardness

6-6.5

Streak

Specific Gravity

Typical:2.59

Toughness

Inclusions

Larvikite displays the blue sheen or shiller effect which is caused by alternating alkali feldspar and plagioclase layers.

Luster

Pearly

Stability

Fracture

Cleavage

Comments

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