Rainbow Moonstone

A variety of Labradorite

Precious GemstoneUncommon

What is Rainbow Moonstone?

A variety of labradorite, rainbow Moonstone is generally a translucent stone that exhibits rainbow colors when seen in natural light. This stone has been used since ancient times — Romans and Greeks associated this stone with their lunar gods. Today, it's cut into beads and cabochons and used with jewelry.

Optical Properties

Refractive Index
1.554-1.573
Birefringence
0.007-0.011
Pleochroism
Red stones from the Congo - weak; Green stones - distinct: greenish yellow to bluish green
Optical Character
Biaxial positive
Dispersion
0.012

Discover Values

Rarity
3.9out of 5.0
78%
Popularity
4.1out of 5.0
82%
Beauty
4.2out of 5.0
84%
Cultural Value
3.8out of 5.0
76%
Collection Value
4.2out of 5.0
84%

Rainbow Moonstone Market Value Calculator

Estimate the market value of Rainbow Moonstone using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Rainbow Moonstone Localities Map

See where Rainbow Moonstone is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

Key Characteristics

Composition of Rainbow Moonstone

[Na(90 70%)Ca(10 30%) Al, Si]AlSi2O8, Sodium Calcium Aluminum Silicate

Quick Facts

Physical Properties

Color
White, blue, iridescent
Hardness (Mohs)
6 - 6.5
Density
2.65 - 2.75 g/cm³
Streak
White
Luster
Pearly, Vitreous
Crystal System
Triclinic

Chemical Properties

Chemical Formula
(Na, Ca)Al1-2Si3-2O8
Elements
Na, Ca, Al, Si, O
FREE APP
4.7
Ruby Glint rock identifier app

Identify Rainbow Moonstone Instantly

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