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Home / The Crystal Guide / Albite
A stone guide

Albite

The finest tourmaline and aquamarine specimens usually stand on a snowy stage of albite, the gem world's favorite pedestal.
Tectosilicate (plagioclase feldspar)CaliforniaSee treatment disclosure

Albite is tectosilicate (plagioclase feldspar), NaAlSi₃O₈. In the hand, it rates 6 to 6.5 on the Mohs scale, and it runs snow white and colorless. Snow-white feldspar with mirror-flash cleavage faces, often as curved fans of thin platy blades (cleavelandite) hosting gem crystals. Granites and pegmatites worldwide; showy cleavelandite from Brazil, Pakistan, California (USA).

Family
Tectosilicate (plagioclase feldspar)
Mohs
6 to 6.5
System
Triclinic
Luster
Vitreous to pearly
Gravity
2.60 to 2.63
Light
Translucent to opaque
What it is

The geology.

Albite carries the formula NaAlSi₃O₈. It belongs to the triclinic system. It is classified as tectosilicate (plagioclase feldspar).

It sits at 6 to 6.5 on the Mohs scale. The surface reads vitreous to pearly. Light behaviour is translucent to opaque. Specific gravity runs 2.60 to 2.63. The streak is white. It breaks with two cleavages near 90°.

Snow-white feldspar with mirror-flash cleavage faces, often as curved fans of thin platy blades (cleavelandite) hosting gem crystals.

You will most often meet it as platy cleavelandite blades, blocky crystals, sugary masses in pegmatite or matrix under tourmaline.

Where it comes from

The origins.

Granites and pegmatites worldwide; showy cleavelandite from Brazil, Pakistan, California (USA).

On value, the database notes: common; sculptural cleavelandite specimens are mid-range.

What people work with it for

Traditional associations.

In energy work traditions, albite carries little established lore; it is associated loosely with clarity and fresh starts.

People buy on this language, so it belongs on the page. It belongs under the facts, though, not over them.

What to look for

Spotting the real thing.

Snow-white feldspar with mirror-flash cleavage faces, often as curved fans of thin platy blades (cleavelandite) hosting gem crystals.

Looks like How to tell them apart
Quartz (milky) Quartz never shows flat cleavage flashes and is slightly harder
Calcite Calcite fizzes and is far softer
Barite Barite is much heavier and softer
Check it yourself

At-home tests.

You can run every one of these at a kitchen table. Good light matters more than gear when you are looking at albite.

Test What you should see
By eye Flat cleavage flashes at two angles near 90°
Scratch check Scratches glass with effort (Mohs 6+)
By eye Fine parallel twinning striations on cleavage faces

Anything that scratches, burns or dissolves the piece is a lab job. Get it appraised rather than testing it apart.

How to live with it

Care & handling.

At 6 to 6.5 on the Mohs scale it handles careful wear but scratches against quartz and dust. Store it separately and take rings off before rough work.

It breaks with two cleavages near 90°, which is worth knowing before you set it or drop it.

Warm water and a soft cloth clean almost everything. Ultrasonic tanks, steamers and household cleaners are where pieces get ruined.

For the serious reader

A deeper look.

Extended detail on composition, sourcing, authentication and market value.

The physical record

The formula on record is NaAlSi₃O₈. Crystal system: Triclinic. Specific gravity: 2.60 to 2.63. Streak: White. Cleavage and fracture: Two cleavages near 90°.

How it reaches the market

Granites and pegmatites worldwide; showy cleavelandite from Brazil, Pakistan, California (USA).

What it gets confused with

Quartz (milky): Quartz never shows flat cleavage flashes and is slightly harder. Calcite: Calcite fizzes and is far softer. Barite: Barite is much heavier and softer.

What it is worth

Common; sculptural cleavelandite specimens are mid-range.

One more thing

The finest tourmaline and aquamarine specimens usually stand on a snowy stage of albite, the gem world's favorite pedestal.

From the Beyond Bohemian library

An education-first guide.

No product links here. We do not sell albite, and a guide that only covers our own shelves would not be much of a guide.

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