Skip To Content
Go to gemstones.com homepage
Sign In
Recommended searches
Gemopedia
  • Ruby
  • Sapphire
  • Tanzanite
  • Diamond
  • Emerald
  • Opal
  • Moissanite
  • Peridot
  • All Gemstones in Gemopedia
Shop Gemstones
  • Shop Jedora Gemstones
  • Shop JTV Gemstones
Videos
  • All About Black Diamonds
  • Unboxing a Million Dollars in Gemstones!
  • Unboxing Emeralds: Gemologist vs. Geologist
  • Unboxing Rough Diamonds
  • Unboxing Garnet: Rhodolite, Pyrope, Demantoid
  • Marvel Cinematic Gemstones
  • All About Pearls and How They're Made
  • Fun Facts About Tanzanite
  • Freshwater Pearls vs. Saltwater Pearls
  • All Videos
Articles
  • Gemstone Collecting
  • Gemstone Beauty
  • Gemstone Color
  • Gemstone Origins
  • Optical Properties
  • Rare Gemstone Collecting
  • Gemstone Luster
  • Phenomenal Gemstones
  • All Articles
Showcase Collections
  • Quartz Gemstones
  • Organic Gemstones
  • American Gemstones
  • Birthstones
  • Mineral Specimens
  • Colors of Tourmaline
  • All Showcases
About Us
  • About Us
Feedback
  • Survey
Account
  • Account Information
  • Author Biography
  • Articles
  • Gemstones Home
  • Gemopedia

Spodumene

Spodumene

By Tim Matthews, JD, FGA, GG, DGA,
CEO and President of JTV (retired)
Published: June 2014
Modified: September 2023
Spodumene Polished Spodumene Rough Spodumene Jewelry
  • Facebook
  • Twitter
  • Copy Link
Table of Contents
  • General Information
  • Spodumene Colors
  • Spodumene Spectra
  • Alternate Names
  • Countries of Origin
  • Care
  • Related Videos

Spodumene is the name of a mineral species that includes two very special gems varieties: kunzite and hiddenite. Spodumene is named from the Greek spodoumenos, meaning "burnt to ash," which alludes to the ashy color of many specimens. A member of the pyroxene group, spodumene belongs to a class of minerals called silicates and it is one of a small number of minerals that contain lithium. Spodumene also occurs in many other shades of colors, all pale but very clear and brilliant. These varieties are given color descriptor names; for example, lemon spodumene.

General Information

  • Classification
  • Optical Properties
  • Characteristic Physical Properties
  • Chemistry & Crystallography
Common Name
Spodumene
Species
Spodumene
Transparency
Transparent
Dispersion
Strength: Moderate Fire Value: 0.017
Refractive Index
1.660-1.681 Tolerance: (+0.005/-0.005)
Birefringence
0.014-0.016
Optic Character
Biaxial
Optic Sign
Positive
Polariscope Reaction
Doubly Refractive (DR)
Fluorescence
SWUV: inert yellow, orange, pink to strong orange-red
LWUV: inert yellow, orange, pink to strong orange-red
CCF Reaction
might appear slightly pink in green stones
Pleochroism
Trichroic, strong, varying shades of body color
Hardness
6.5-7
Streak
White
Specific Gravity
3.150-3.210 Typical:3.180
Toughness
Poor
Inclusions
Spodumene is a type I clarity stone. Stones might contain growth and etch tubes, healing cracks, liquid and multi-phase inclusions.
Luster
Vitreous
Fracture
Uneven, Splintery
Cleavage
Perfect, in two directions
Chemical Name
lithium aluminum silicate
Chemical Formula
LiAlSi2O6
Crystal System
Monoclinic
Chemistry Classification
Silicate

Spodumene Colors

  • Colorless Spodumene
    Colorless
  • Green Spodumene
    Green
  • Orange Spodumene
    Orange
  • Pink Spodumene
    Pink
  • Purple Spodumene
    Purple
  • Purple Spodumene
    Purple
  • Yellow Spodumene
    Yellow

Spodumene Spectra

Spodumene Spectra
SPODUMENE

Color due to iron. Ferric iron produces two lines in the deep blue in almost identical positions. The dominant narrow line at 437nm.is often accompanied by a weaker one at 433nm. the strength of both dependent on the saturation of color. Very little variation in strength is detected with optical orientation

We acknowledge the significant scientific contributions of John S Harris, FGA to the study of gemstone spectra and with deep appreciation to him, acknowledges the use of his images and related notes about gemstones and their spectra in the educational materials on this website.

Alternate Names

Triphane, Kunzite, Hiddenite

Countries of Origin

Canada; Myanmar; Afghanistan; Austria; Russian Federation; Pakistan; Unknown; United States of America; Brazil; Madagascar; India

Care

Gentle care. Avoid prolonged exposure to light and heat with kunzite, yellow spodumene and treated hiddenite and green spodumene to prevent color fading. Some stones cleave or fracture easily. Wear with care. Avoid ultrasonic cleaners.

Related Videos

Instagram
Facebook
YouTube

Sign up for the latest from Gemstones.com!

 
 
  • About Us
  • Terms & Conditions
  • Privacy Policy
  • Sitemap
  • Contact Us
  • Request a Partner Invitation
  • Your Privacy Choices CCPA Icon

©  America's Collectibles Network, Inc. All Rights Reserved.