Lava Rocks(450)
Best seller 10 Pound Lava Rocks, 1-3 Inch Large Lava Rock for Natural Gas and Propane Fire Pits/Fireplace, Natural Black Lava Rocks From $12.99

10 Pound Lava Rocks, 1-3 Inch Large Lava Rock for Natural Gas and Propane Fire Pits/Fireplace, Natural Black Lava Rocks
VEVOR Lava Rocks, 1.2-2.0 inch 25 Pcs Fire Stones Lava Rocks For Fire Pit, Reusable Fire Pit Stones Indoor and Outdoor Use, Decorative Firepit Rocks for Propane/Gas Fireplace,Stove,Courtyard,Camping $14.52 Was $24.90

VEVOR Lava Rocks, 1.2-2.0 inch 25 Pcs Fire Stones Lava Rocks For Fire Pit, Reusable Fire Pit Stones Indoor and Outdoor Use, Decorative Firepit Rocks for Propane/Gas Fireplace,Stove,Courtyard,Camping
1/2" Copper Reflective Fire Glass 10lb $18.99

1/2" Copper Reflective Fire Glass 10lb
Overall pick Pavestone .5 Cu. ft. Bagged Decorative Stone Red Lava Rock $6.88

Pavestone .5 Cu. ft. Bagged Decorative Stone Red Lava Rock
Best seller Black Pure Volcanic Lava Decorative Stones, 5lb Bag From $12.99
Black Pure Volcanic Lava Decorative Stones, 5lb Bag
The Quikrete 1175-05 0.5 cu. ft. Red Lava Rock Hardscapes $31.56

The Quikrete 1175-05 0.5 cu. ft. Red Lava Rock Hardscapes
ACDANC Natural Black Lava Rocks for Aquarium,Fish Tank Landscaping,Garden Plants,Bonsai,Fire Pits - Volcanic Decorative Stones (0.33lb/Bag) $7.79

ACDANC Natural Black Lava Rocks for Aquarium,Fish Tank Landscaping,Garden Plants,Bonsai,Fire Pits - Volcanic Decorative Stones (0.33lb/Bag)
Lifespace Natural Lava Rocks For Gas Grills, Firepits & Fireplaces $16.35

Lifespace Natural Lava Rocks For Gas Grills, Firepits & Fireplaces
Red Lava Rock | 3/8" Volcanic Lava Rock for Fire Pits & Fireplaces | 10 Pounds From $22.99
Red Lava Rock | 3/8" Volcanic Lava Rock for Fire Pits & Fireplaces | 10 Pounds
Lava Rock, Soil Aggregate for Bonsai, Cactus, Succulents, and Other Container Grown Plants, enables Optimal Drainage, Improves Soil Aeration 1/4 inch Black Lava Rock (2 Quarts Bag) $13.66

Lava Rock, Soil Aggregate for Bonsai, Cactus, Succulents, and Other Container Grown Plants, enables Optimal Drainage, Improves Soil Aeration 1/4 inch Black Lava Rock (2 Quarts Bag)
Black Lava Rock 1.2"-2" Large Volcanic Rocks for Gas Fireplace, Fire Pit, Propane Fire Pit, Fire Glass Embers 10Lbs $22.99

Black Lava Rock 1.2"-2" Large Volcanic Rocks for Gas Fireplace, Fire Pit, Propane Fire Pit, Fire Glass Embers 10Lbs
Franklin - 61490 - Lava Rock $21.94

Franklin - 61490 - Lava Rock
Blue Ridge Brand Lava Rock - Tumbled Lava Stones - Red Lava Pebbles - Volcanic Rock - Landscaping Rocks From $28.99

Blue Ridge Brand Lava Rock - Tumbled Lava Stones - Red Lava Pebbles - Volcanic Rock - Landscaping Rocks
Lava Stone Spheres – 1.18 in Natural Volcanic Rock Balls for Diffuser, Aromatherapy, DIY Craft & Home Decor, Stress Relief & Meditation, Pack of 2

Lava Stone Spheres – 1.18 in Natural Volcanic Rock Balls for Diffuser, Aromatherapy, DIY Craft & Home Decor, Stress Relief & Meditation, Pack of 2
Firegear 10 lbs Bag of 1 to 2 Black Lava Rock $31.99

Firegear 10 lbs Bag of 1 to 2 Black Lava Rock
10 lbs Large Rounded 2-4in Lava Rock Stone For Fire Pit by Element Fire Glass Smooth Lava Stone

10 lbs Large Rounded 2-4in Lava Rock Stone For Fire Pit by Element Fire Glass Smooth Lava Stone
Pavestone CUFT Red Volcanic Lava Rock (0.5 cu. ft) $22.34

Pavestone CUFT Red Volcanic Lava Rock (0.5 cu. ft)
Black Lava Rocks for Plants, 350g Pure Volcanic Rock Lava Stones Top Dressing for Cacti Succulents Plants, Bonsai
Black Lava Rocks for Plants, 350g Pure Volcanic Rock Lava Stones Top Dressing for Cacti Succulents Plants, Bonsai
Appliance Factory Parts LARGE LAVA ROCKS 6LB BAG 16870020 $14.99

Appliance Factory Parts LARGE LAVA ROCKS 6LB BAG 16870020
Reusable Ceramic Fire Balls 6-Pack Lava Rocks for Fire Pit, Gas Fireplace & Outdoor Decor Decorative Fire Stones $49.50 Was $55.98

Reusable Ceramic Fire Balls 6-Pack Lava Rocks for Fire Pit, Gas Fireplace & Outdoor Decor Decorative Fire Stones
Lava Rocks for Fire Pit - 25 Pcs 1.2-2.0 Inch Fire Stones $33.75

Lava Rocks for Fire Pit - 25 Pcs 1.2-2.0 Inch Fire Stones
Always-Quality Volcanic Lava Rock Metate, 8 in $148.87

Always-Quality Volcanic Lava Rock Metate, 8 in
21St Century Product B42A Rock Lava - 7 lbs $26.71

21St Century Product B42A Rock Lava - 7 lbs
Black Lava Rocks Sand, 350g Succulents and Cactus Black Sand, DIY Rocks Gravel for Bonsai, Fairy Gardening, Terrarium, Vases Fillers $17.99

Black Lava Rocks Sand, 350g Succulents and Cactus Black Sand, DIY Rocks Gravel for Bonsai, Fairy Gardening, Terrarium, Vases Fillers
20-8111 Lava Rock - 5 lbs. $29.79

20-8111 Lava Rock - 5 lbs.
LITINKIMI Lava Rock Black Irregular 1Bag For Decorative Items In Garden And Aquarium $9.38

LITINKIMI Lava Rock Black Irregular 1Bag For Decorative Items In Garden And Aquarium
Blue Ridge Brand Gray Lava Pebbles Volcanic Rock Decorative Stones From $31.99

Blue Ridge Brand Gray Lava Pebbles Volcanic Rock Decorative Stones
Dagan Industries Black Lava Rock Bag Outdoor Decorative Stone (6 lbs) $34.39

Dagan Industries Black Lava Rock Bag Outdoor Decorative Stone (6 lbs)
1 lb Lava tumbled stones $46.34

1 lb Lava tumbled stones
Hoffman 14452 2 Quart Volcanic Lava Rock $21.34

Hoffman 14452 2 Quart Volcanic Lava Rock
VEVOR Ceramic Fire Balls, 5 Inch 6 Pcs Round Fire Stones, Reusable Lava Rocks Indoor and Outdoor Use, Decorative Fire Pit Rocks for Propane/Gas Fireplace, Stove, Courtyard, Camping, Black $41.99

VEVOR Ceramic Fire Balls, 5 Inch 6 Pcs Round Fire Stones, Reusable Lava Rocks Indoor and Outdoor Use, Decorative Fire Pit Rocks for Propane/Gas Fireplace, Stove, Courtyard, Camping, Black
VEVOR Lava Rocks, 1.2-2.0 inch 25 Pcs Fire Stones Lava Rocks For Fire Pit, Reusable Fire Pit Stones Indoor and Outdoor Use, Decorative Firepit Rocks for Propane/Gas Fireplace,Stove,Courtyard,Camping $14.52 Was $24.90

VEVOR Lava Rocks, 1.2-2.0 inch 25 Pcs Fire Stones Lava Rocks For Fire Pit, Reusable Fire Pit Stones Indoor and Outdoor Use, Decorative Firepit Rocks for Propane/Gas Fireplace,Stove,Courtyard,Camping
Blue Ridge Brand Lava Rock - Black/Gray Lava Pebbles - Volcanic Rock - Landscaping Rocks - Medium - 10 Pound

Blue Ridge Brand Lava Rock - Black/Gray Lava Pebbles - Volcanic Rock - Landscaping Rocks - Medium - 10 Pound
1.2"-2" Large Black Lava Rocks for Fire Pit Rocks for Propane, Lava Rocks for Gas Fireplace Rocks, Volcanic Rocks $17.49

1.2"-2" Large Black Lava Rocks for Fire Pit Rocks for Propane, Lava Rocks for Gas Fireplace Rocks, Volcanic Rocks
50 lbs Mixed Tumbled Lava Stone

50 lbs Mixed Tumbled Lava Stone
Natural Volcanic Lava Rock Aquarium Stones, Irregular Decorative Stones for Fish Tank Landscaping and Home Decor $14.87

Natural Volcanic Lava Rock Aquarium Stones, Irregular Decorative Stones for Fish Tank Landscaping and Home Decor
HINTRMENT Lava Rock Black Irregular 1Bag For Scientific Understanding And Garden Decor $18.24

HINTRMENT Lava Rock Black Irregular 1Bag For Scientific Understanding And Garden Decor
2.2lbs Succulent Cactus Soil 0.25inch Potting Mix Horticultural Lava Rocks Bonsai Soil for Indoor Plants Drainage Volcanic Rock for Terrarium Gardening Top Dressing $32.99

2.2lbs Succulent Cactus Soil 0.25inch Potting Mix Horticultural Lava Rocks Bonsai Soil for Indoor Plants Drainage Volcanic Rock for Terrarium Gardening Top Dressing
Dagan LR-1814-50- 0.125 to 0.25 in. 50 lbs Bag of Cinders Lava Rock, Black $99.12

Dagan LR-1814-50- 0.125 to 0.25 in. 50 lbs Bag of Cinders Lava Rock, Black
CintBllTer Small Lava Rock Package (57897K) $30.20

CintBllTer Small Lava Rock Package (57897K)
Athena NL-5080 2-3 in. Lava Pebbles - 50 lbs $159.41

Athena NL-5080 2-3 in. Lava Pebbles - 50 lbs
45LB White River Rocks, High Polished Pebbles, 1–2 inch Decorative Rocks for Garden Landscaping, Lava Rocks for Plants, Aquarium & Fish Tank Rocks, Outdoor Decorative Stones & Pathway Design

45LB White River Rocks, High Polished Pebbles, 1–2 inch Decorative Rocks for Garden Landscaping, Lava Rocks for Plants, Aquarium & Fish Tank Rocks, Outdoor Decorative Stones & Pathway Design
Ceramic Fire Pebble Stones 48 Pcs 1-2 Inch Lava Rocks Reusable Indoor Outdoor Fire Pit Decorative Rocks for Propane Gas Fireplace Stove Courtyard Camping $26.99

Ceramic Fire Pebble Stones 48 Pcs 1-2 Inch Lava Rocks Reusable Indoor Outdoor Fire Pit Decorative Rocks for Propane Gas Fireplace Stove Courtyard Camping
Other options to consider(282)
FAQ
What are lava rocks good for?
Lava rocks are versatile and can support both function and decor across outdoor and indoor projects.
- Fire pits & gas fireplaces: They help disperse flame, protect burner pans, and retain warmth for a natural look.
- Landscaping & hardscapes: Used as long-lasting mulch, they can reduce evaporation and improve drainage around beds and borders.
- Planters & bonsai: Their porous texture aids aeration and drainage in soil mixes and works well as a top dressing.
- Aquariums & terrariums: Commonly used for aquascaping and biological surface area; always check the product description for aquarium suitability.
- Gas grills (where compatible): Some setups use them to help distribute heat—refer to your appliance manual.
Rinse rocks before use, and let them dry fully prior to high-heat applications. Walmart offers a range of sizes and colors with pickup and delivery options.
What exactly is a lava rock?
Lava rock is a naturally formed igneous stone created when volcanic lava cools and solidifies. It’s typically lightweight, porous, and heat-tolerant, which is why you’ll see it used in fire pits and gas fireplaces. Colors often include black and red, and pieces can range from fine chips to larger stones.
That porous structure promotes airflow and can hold some warmth, which may be helpful in heating applications. In soils, the texture can improve drainage and aeration for cacti, succulents, and bonsai. It’s also a popular choice for landscaping and aquascaping decor. Because sources and preparation vary, it’s a good idea to review each product’s description to confirm suitability for your specific project.
How much do lava rocks cost?
Pricing can vary based on several factors rather than a single number. Differences you’ll see across options include:
- Package size and measure: Bags may be sold by weight (lbs) or volume (quarts/cubic feet), which affects value comparisons.
- Rock size and finish: Smaller horticultural chips or tumbled, decorative stones may be priced differently than larger, irregular pieces.
- Color and grade: Black vs. red, and specialty packaging for aquarium or plant use, can influence cost.
- Fulfillment: Delivery vs. store pickup may affect your total spend.
To compare value, look at coverage needs for your project and the unit of measure on each listing. You can sort and filter by price on Walmart to find an option that fits your budget and pickup or delivery preferences.
Which lava rock size should I pick?
The right size depends on your project and the look you want:
- Fire pits & gas fireplaces: Medium pieces (often around 1–2 inches) are commonly used to cover burner trays without blocking airflow. Always follow your appliance’s guidance for media type and depth.
- Landscaping mulch: Larger stones (around 1–3 inches) create bold texture; smaller pebbles (about 3/8–3/4 inch) suit paths or finer finishes.
- Planters & bonsai: Fine chips or sand-like particles help with drainage and top dressing without overwhelming roots.
- Aquariums & terrariums: Smaller, porous pieces are easier to place and clean; verify aquarium suitability in the product details.
Color (black vs. red) is mostly aesthetic, so choose what complements your space. If layering with other media (like fire glass), confirm compatibility with your burner and keep ports clear.
How do I clean lava rocks?
Light maintenance can help keep lava rocks looking good and functioning well:
- Cool completely: Allow rocks in fire pits or grills to cool before handling.
- Remove debris: Shake in a bucket or use a soft brush to clear ash and dust.
- Rinse: Rinse with clean water; avoid harsh chemicals. For first-time use in plants or aquariums, rinse until water runs clear.
- Dry thoroughly: Let rocks dry fully before any high-heat use to help reduce popping from trapped moisture.
- Inspect: Discard pieces that are crumbling or excessively soiled.
Avoid dousing hot rocks with water, and consider gloves and eye protection to minimize dust exposure. Specific care needs can vary by product, so checking the item’s instructions is advisable.
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