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Mr. Fireglass Fire Pit Fireplace Lava Rock
Transform any dull fire pit to a warm and exotic flair
Natural lava rocks are excellent base layers and cost-effective fillers for gas fire pits and fireplaces. These black or red fire glass have a naturally porous surface, which determines their superior gas fluidity. They can withstand extremely high temperatures without damage, degrade or crumbling. Both visually and ambitiously, the volcanic rock is a low-cost way to bring exotic fire features to you.
Lava rocks work great as a firebase underneath fire glass for a fire pit or fireplace. Complements many landscapes by adding texture, color, and depth. Great for indoor and outdoor use around your home or business. Mr. Fireglass offers two colors and different sizes of lava rocks for you to choose
Reasons to Choose Our Natural Lava Rocks
- Clean-burning Fire Flame
- Improve Flame Performance
- Withstand High Temperature
- Low Maintenance
- Adds Brilliant Color to the Light of the Fire
- Safe to Use
- Gas Compatible
Decoration for Fire Pit & Fireplace
These black lava rocks have natural a porous surface, which can help spread the gas dispersion in all directions to improve the flame performance. It works great as a firebase underneath fire glass for fire pit or fireplace.
Activate Oxygen Ions in Water and Optimize Water Feature
Natural volcanic rocks can activate the oxygen ions in the water and promote the metabolism of plants and animals. The porous structure can absorb harmful bacteria, residues and harmful heavy metal ions to keep the water in the tank clean.
Garden, Lawn and Walkway Decorations
With an earthy, natural look, Lava Rock complements many landscapes by adding texture, color, and depth. It works well as a transitional rock between two landscapes. It adds an extra beauty as decoration for any leisure space like a garden, lawn and walkway.
HOW MUCH YOU NEED?
Round Fire Pit
Diameter (A) x Diameter(A) x Glass Depth (B) / 24 = Glass (lbs.)
We recommend a minimum 2” of fire glass depth for most installations. For example, a 24" diameter fire pit at the recommended 2” of fire glass depth: 24 X 24 X 2 / 24 = 48 lbs.
Rectangular Fire Pit
Width (A) x Fireplace Depth (B) x Glass Depth (C) / 19 = Glass (lbs.)
We recommend a minimum 2” of fire glass depth for most installations. For example, a 30" X 10" fire pit at the recommended 2” of fire glass depth: 30 X 10 X 2 / 19 = 31 lbs.
Square Fire Pit
Width (A) x Width (A) x Glass Depth (B) / 19 = Glass (lbs.)
We recommend a minimum 2” of fire glass depth for most installations. For example, a 20" fire pit at the recommended 2” of fire glass depth: 20 X 20 X 2 / 19 = 42 lbs.
Indoor Fireplace
(Front Width (A) + Back Width (B) )/2 x Fireplace Depth (C) x Glass Depth (D)/19 = Glass (lbs.)
We recommend 2" - 4" of glass depth for most fireplaces. For rectangular and square fireplaces, use the same front width as back width.
J B
Reviewed in the United States on March 29, 2025
Used this rock for my outside gas fireplace.
Customer
Reviewed in the United States on March 13, 2025
These are super large, and they look great in our fire pit. No popping, and they seem like they will last a very long time.
Alexandria Essoussi
Reviewed in the United States on January 13, 2025
I love this product it did exactly what it was meant for. It looks classy and burns well. The quality is good and is affordable.
Works great
Reviewed in Canada on September 27, 2024
Perfect amount in the bag for our deck fire pit.
Dr Matt
Reviewed in the United Arab Emirates on September 13, 2024
It was read in color and 8cm in size
Amanda A.
Reviewed in Canada on June 3, 2024
Put a thin layer of the lava rocks and within 15mins with the flame on a lower setting a few rocks flew out of the gas fire pit and burned my carpet and seat cushions. Not impressed at all.
Carol Moman
Reviewed in Canada on May 18, 2024
Fast efficient service as always. Product is of very good quality
Lisa
Reviewed in Canada on March 5, 2024
I've bought a few different brands of black lava rock but I have to say this is the first time I had to wash the rock just to find out its true color and if I had been shipped the wrong ones. They are more of a rust red color than black. Maybe speckled black lava rock would be a more accurate description.
Yes
Reviewed in Canada on December 30, 2024
came as described, they look brown at first have to wash them to get a darker color
Brandon
Reviewed in the United States on December 16, 2024
Make sure you rinse this thoroughly before you put this into your aquarium. Will cloud up your water. Sizes are pretty good and looks nice.
tester
Reviewed in Canada on December 13, 2024
Works great in propane fire pit
Gina-Marie H.
Reviewed in Canada on November 8, 2024
Kinda small. Slide through the sides
D
Reviewed in Canada on November 29, 2024
Mix of brown, red and black
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