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Product Description
Natural Lava Rock
Our authentic lava fire rock is naturally heat proof and is ideal for use in indoor and outdoor gas fire pits and fireplaces. Lava rock comes in red or black colors, can be shaped like rounded pebbles or angular stones, and is available in small and large sizes.
Great for use in:
- Fire Pits
- Fire Places
- Planters
- Flower Pots
- Aquariums
Outdoor Fire Pits
Decorative Designs
Indoor Fireplace
Fish Tank Aquarium
Calculate How Much Lava Rock You Need!
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Circular or Rounded Fire PitsTo calculate the amount of lava rock needed to fill a circular fire pit or bowl, use the following equation: Diameter X Diameter X Depth, divided by 24 = pounds of lava rock needed. We recommend a minimum 2” depth for most installations. For example, a 25" diameter fire pit at the recommended 2” of depth: 25 X 25 X 2, divided by 24 = 52 lbs. |
Rectangle Fire PitsTo calculate the amount of lava rock needed to fill a square or rectangular fire pit, use the following equation: Width X Length X Depth, divided by 19 = pounds of lava rock needed. We recommend a minimum 2” of depth for most installations. For example, a 20" X 25" fire pit at the recommended 2” of depth: 20 X 25 X 2, divided by 19 = 52 lbs. |
Square Fire PitsTo calculate the amount of lava rock needed to fill a square or rectangular fire pit, use the following equation: Width X Length X Depth, divided by 19 = pounds of lava rock needed. We recommend a minimum 2” of depth for most installations. For example, a 20" X 25" fire pit at the recommended 2” of depth: 20 X 25 X 2, divided by 19 = 52 lbs. |
Flat LandscapeTo calculate the amount of lava rock needed to fill your landscape area, use the following equation: Width X Length X Depth, divided by 19 = pounds of lava rock needed. We recommend a minimum 1.5” of depth for most installations. For example, a 48" X 48" planter at the recommended 1.5” of depth: 48 X 48 X 1.5, divided by 19 = 182 lbs. (Make sure to put down weed barrier fabric first!) |
Lava Rock Accessories
With its neutral tone and natural porous structure, natural lava rock can be paired with many different accessories.
You can use them to add texture and contrast to fire glass, adding height to silica sand, or as an excellent base for our many ceramic fire accessories!
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| Original Fire Glass | Silica Sand | Ceramic Fire Balls | Ceramic Skulls | Ceramic Pumpkin | |
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| Price | — | — | $59.24 | — | — |
| Description | One of the most frequently used types of fire glass, the original is comprised of pieces that are flat on both sides. There is an option where one side of the glass is polished to create a finish that mirrors the firelight. | Improves flame performance with consistent gas dispersion in all directions, ideal as a base layer underneath fire glass, lava rock, fire pit balls or other decorative fire accessories. | Available in a variety of colors and finishes, fire pit balls are the ideal addition to any fire pit size or shape. | Ideal accessory to complement your fire pit or fireplace, add skulls and crossbones on top of your lava rock or fire glass to really “wow” your guests! | Ideal accessory to complement your fire pit or fireplace, our faux carved pumpkins are a huge hit during Halloween! |
| Sizes | 1/4", 1/2" | Fines | 2", 3", 4", 5", 6" | 6" | 6" |
Compare with similar items
This Item  Fire Pit Essentials Black 3/4 Inch Lava Rock | Fireproof and Heatproof Volcanic Lava Rock, Perfect for Fire Pits, Fireplaces, BBQs and More. Indoor and Outdoor use - Natural Stones | 10 Pounds |  |  |  |  |  | |
| Price | — | $25.99 | $29.99 | $36.99 | $15.89 | $17.99 |
| Delivery | — | Get it as soon as Wednesday, May 15 | — | Get it as soon as Tuesday, May 14 | — | Get it as soon as Tuesday, May 14 |
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| Light weight | ||||||
| Sold By | — | Skyflame Outdoor | Onlyfire Outdoor LLC | Onlyfire Outdoor LLC | Yifeng Stroe | Skyflame Outdoor |
Reviews with images
Not advertised
I ordered the 3 - 5 inch black lava rocks and I got was a pile of whatever they decided to give me. Lava rocks weren’t really black, a lot reddish color in them especially after I did a little rinse. Spot of white/gray deposits, not sure what minerals they are or if it’s concrete. A few of them had what looked to be manufactured drilling and formation. Not natural looking and what looks like machining. I’m not a geologist or masonry expert but I do live on a volcanic island and some of these rocks are questionable.
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Reviewed in the United States on August 31, 2020
Reviewed in the United States on March 16, 2023
Reviewed in the United States on December 5, 2022
Reviewed in the United States on February 14, 2023
