Lava Rock vs Stone Dust
Side-by-side comparison of Lava Rock and Stone Dust to help you choose the right gravel for your project.
Overview
Lava Rock
Lava rock is a lightweight, porous volcanic stone commonly used in landscaping. Its rough texture helps retain moisture while allowing airflow to plant roots.
Stone Dust
Stone dust is a finely crushed aggregate made up of stone particles smaller than 1/4 inch. It compacts tightly when installed and lightly moistened, creating a firm, smooth surface ideal for leveling and base preparation.
Common Uses
Lava Rock
- ✓ Landscaping
- ✓ Garden beds
- ✓ Decorative ground cover
Stone Dust
- ✓ Paver base
- ✓ Walkways
- ✓ Patios
- ✓ Leveling layer
- ✓ Pathways
Pros & Cons
Lava Rock
- + Very lightweight
- + Excellent moisture retention
- + Decorative appearance
- − Breaks down over time
- − Sharp edges
- − Can scatter easily
Stone Dust
- + Compacts very tightly
- + Creates a smooth, level surface
- + Affordable and widely available
- + Easy to shape and grade
- − Poor drainage
- − Can become muddy if overwatered
- − Dusty when dry
- − Erodes without edging
Cost Comparison
| Measure | Lava Rock | Stone Dust |
|---|---|---|
| Per ton | $90 – $150 | $15 – $30 |
| Per cubic yard | $110 – $180 | $20 – $40 |
Sizes & Colors
Lava Rock
Typically 3/4"–1.5" sizes. Red or black.
Stone Dust
Fine crushed stone particles under 1/4 inch. Color varies by source rock and is typically gray or tan.
Published February 11, 2026
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