Breccia
Breccia is sedimentary (clastic; also fault/volcanic types). In the hand, it rates variable (clast-dependent) on the Mohs scale, and it runs mixed angular patches in any palette and red-tan classic desert hues. Rock made of visibly ANGULAR broken fragments cemented together, nature's rubble recompacted into stone. Fault zones, landslides, impact craters, and desert flash-flood deposits worldwide.
The geology.
Breccia carries the formula . It belongs to the, system. Catalogues list it as sedimentary (clastic; also fault/volcanic types).
It sits at variable (clast-dependent) on the Mohs scale. The surface reads dull; varies. Light behaviour is opaque. Specific gravity runs 2.3 to 2.8. The streak is,. It breaks with uneven; breaks around or through clasts.
Rock made of visibly ANGULAR broken fragments cemented together, nature's rubble recompacted into stone.
It reaches buyers as polished slabs, spheres, bookends or field specimens.
The origins.
Fault zones, landslides, impact craters, and desert flash-flood deposits worldwide.
On value, the database notes: common and very affordable.
Traditional associations.
In energy work traditions, breccia is read as a stone of integrating life's broken pieces into wholeness.
We keep this section because people ask. It sits below the geology on purpose, and none of it describes something the stone does.
Spotting the real thing.
Rock made of visibly ANGULAR broken fragments cemented together, nature's rubble recompacted into stone.
| Looks like | How to tell them apart |
|---|---|
| Conglomerate | Conglomerate's fragments are rounded river pebbles; breccia's are sharp-edged |
| Brecciated jasper | A silica-cemented special case hard enough to scratch glass, see its own entry |
| Man-made terrazzo | Terrazzo's chips sit in cement or resin with suspiciously even spacing |
At-home tests.
Before anyone talks you into a lab report, these are the checks worth doing yourself on breccia.
| Test | What you should see |
|---|---|
| By eye | Angular fragments visible at arm's length |
| Scratch check | Hardness varies fragment to fragment |
| Acid check | Cement may fizz if calcite-based |
Anything that scratches, burns or dissolves the piece is a lab job. Get it appraised rather than testing it apart.
Care & handling.
It breaks with uneven; breaks around or through clasts, 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.
A deeper look.
Extended detail on composition, sourcing, authentication and market value.
The physical record
The formula on record is . Crystal system:,. Specific gravity: 2.3 to 2.8. Streak:,. Cleavage and fracture: Uneven; breaks around or through clasts.
How it reaches the market
Fault zones, landslides, impact craters, and desert flash-flood deposits worldwide.
What it gets confused with
Conglomerate: Conglomerate's fragments are rounded river pebbles; breccia's are sharp-edged. Brecciated jasper: A silica-cemented special case hard enough to scratch glass, see its own entry. Man-made terrazzo: Terrazzo's chips sit in cement or resin with suspiciously even spacing.
What it is worth
Common and very affordable.
One more thing
Breccia tells of violence, every specimen records a landslide, fault rupture, volcanic blast, or asteroid impact that shattered rock.
An education-first guide.
No product links here. We do not sell breccia, and a guide that only covers our own shelves would not be much of a guide.
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