sedimentary

Sandstone (Garden Boulder)

Sandstone (SiO2 dominated)

AI-generated identification · may be incorrect

Hardness: 6-7 on Mohs scale; Color: Tan, beige, light brown, yellow-brown; Luster: Dull, earthy; Grain: Medium-grained, granular sand texture; Cleavage: None.

Hardness: 6-7 on Mohs scale
Color: Tan, beige, light brown, yellow-brown
Luster: Dull, earthy

Identified July 24, 2026More sedimentary →

Explore Sandstone (Garden Boulder) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 6-7 on Mohs scale; Color: Tan, beige, light brown, yellow-brown; Luster: Dull, earthy; Grain: Medium-grained, granular sand texture; Cleavage: None.

Formation & geological history

Formed from the accumulation and cementation of sand-sized grains, usually composed of quartz and feldspar, deposited in desert dunes, river channels, or beach environments over millions of years.

Uses & applications

Used extensively as an ornamental landscape stone, building material, garden accent, stacked rock cairn, and paving stone.

Geological facts

Sandstone is one of the most common sedimentary rock types on Earth and makes up roughly 20 percent of all sedimentary rocks found on the planet's surface.

Field identification & locations

Recognized in the field by its gritty, sandpaper-like surface feel and visible quartz grains. Commonly found in exposed rock faces, canyons, and commercially sourced quarries.