GoodGravel

#89 Stone vs Lava Rock

Side-by-side comparison of #89 Stone and Lava Rock to help you choose the right gravel for your project.

Overview

#89 Stone

Small angular crushed stone approximately 3/8 inch and smaller. Similar in size to pea gravel but with angular edges that provide better compaction and stability. A versatile fine aggregate used in both construction and landscaping applications.

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.

Common Uses

#89 Stone

  • Walkways
  • Pipe bedding
  • Asphalt mix
  • Between pavers
  • Top dressing
  • Drainage backfill

Lava Rock

  • Landscaping
  • Garden beds
  • Decorative ground cover

Pros & Cons

#89 Stone

  • + Angular edges compact better than rounded pea gravel
  • + Small size fills tight spaces
  • + Good for pipe bedding and utility trenches
  • + Comfortable enough for walkways
  • + Excellent drainage
  • Too small for driveway base layers
  • Can migrate without edging
  • Less decorative than pea gravel
  • May be tracked by shoes
  • Not widely stocked at all suppliers

Lava Rock

  • + Very lightweight
  • + Excellent moisture retention
  • + Decorative appearance
  • Breaks down over time
  • Sharp edges
  • Can scatter easily

Cost Comparison

Measure #89 Stone Lava Rock
Per ton $22 – $40 $90 – $150
Per cubic yard $28 – $50 $110 – $180

Sizes & Colors

#89 Stone

Angular crushed stone pieces 3/8" and smaller. Color varies by quarry — typically gray, blue-gray, or tan. The angular shape distinguishes it from similarly-sized pea gravel.

Lava Rock

Typically 3/4"–1.5" sizes. Red or black.

Published February 11, 2026

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