Crushed Limestone vs Lava Rock: Size, Cost, and Which to Use

Crushed Limestone

Crushed limestone is quarried limestone that has been crushed and screened into standard sizes from screenings to 3-inch rock. It costs $20 to $45 per ton in 2026, weighs 1.3 to 1.5 tons per cubic yard, and is the cheapest crushed stone across the Midwest, Texas, Florida, Pennsylvania, and any other region sitting on limestone bedrock. Its light color, low price, and the way its fines cement together under traffic make it the default driveway and road gravel in a big part of the country.

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.

Crushed Limestone

• ✓ Driveways
• ✓ Road base
• ✓ Drainage
• ✓ Paver base
• ✓ Concrete aggregate
• ✓ Farm lanes and arenas
• ✓ Landscaping

Lava Rock

• ✓ Landscaping
• ✓ Garden beds
• ✓ Decorative ground cover

Crushed Limestone

• + Cheapest crushed stone in the Midwest, Texas, and Florida
• + Fines cement together into a hard surface
• + Light color brightens driveways and beds
• + Every standard size available
• + Packs harder than granite crusher run

• − White dust in dry weather
• − Raises soil pH, bad for acid-loving plants
• − Softer, breaks down faster under heavy trucks
• − Expensive where it has to be trucked far

Lava Rock

• + Very lightweight
• + Excellent moisture retention
• + Decorative appearance

• − Breaks down over time
• − Sharp edges
• − Can scatter easily

Crushed Limestone

Crushed limestone comes in every standard sieve size: screenings under 1/4 inch, #8 (3/8 to 1/2 inch), #57 (3/4 to 1 inch), #4 (1 to 1.5 inch), #2 (2 to 3 inch), and crusher run (3/4 or 1.5 inch minus). It is angular when fresh and wears smoother than granite. Color runs white, cream, light gray, and tan, and it turns bright white as dust dries on the surface.

Lava Rock

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