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Volcanic boulders for Sale

Great Prices On Volcanic Rocks - Seriously, We Have Volcanic Rock

Volcanic Rock and Boulders Volcanic Cinder and Rock Products These come in a variety of sizes and colors. They are a sturdy product suited for windy, dry areas, along pathways, among paving stones, and rock gardens. Volcanic boulders give a dramatic look to ponds, waterfalls and when spotlighted with landscape lighting Lava landscape boulders as explosive as the sudden volcanic eruption, this rock will generate buzz for your project. It can create a tropical volcanic paradise or a relaxed and peaceful firering for two Boulders, planters, gravel, and more Featherock is the trademark name for a lightweight, natural volcanic stone called pumice. Our stones are products of a rare volcanic occurrence, formed by a molten lava explosion 40,000 years ago which released gasses to create the distinctive spongy texture of Featherock Often called volcanic glass, Black Obsidian is of course black in color with very fine streaks of impurities. Some customers have found actual gold veins running through our Black Obsidian Volcanic Glass on occasion. Black Obsidian Boulders are available in sizes ranging from 6 to 36

Price Per Each $590.00 Southern California Quarry. Home & Business Improvement Sale $ 480.00. Savings: $110.00. Material Type: Volcanic. Level Of Experience Required: Boulders over 150 lbs are best handled by experienced landscape staff. Typical Time Required: Budget 1 Man Hours per boulder and finish work, but placement time varies according. Boulders for sale at wholesale prices, our comprehensive listing of the most common boulders sold in the landscaping industry in the A comprehensive listing of the most common boulders sold in the landscaping industry in California, Arizona and Nevada, boulders for other regions can be Volcanic Rock and Boulders; Rock Rubble and Rip Rap 1. Sierra Boulder has contributed many boulders for memorials and monuments to churches, parks, schools & organizations. Sierra Boulder has donated to the Chinese Quarter Monument-Nevada City, the DeVere Mautino Park-Grass Valley, Del Oro High School-Loomis, the Roseville Fire Museum, Sierra Christian School-Nevada City, The Friendship Club of Nevada County - just to name a few Boulders & Specialty Rocks. Many shapes and sizes from 8 to 6' and larger. Michigan Fieldstone, Pink Dolomite (Picture Rock), Mystic (Black), Holy Boulders. All sold by the pound or ton. We can deliver anything we sell

Video: Volcanic Rock and Boulders Low Prices Fast Deliver

Red Lava Rocks Landscaping | Walsall Home and Garden

Lava - Landscape Boulders Southwest Boulder & Ston

  1. Our boulders are commonly used in projects involving pavilion patios with outdoor kitchens, creating backyard oasis using large rocks, stone patios, and ponds, masonry walls, walkways, individualized ponds with water features, garden ponds, and more. Landscape boulders can provide a dramatic look to a home or business's exterior
  2. Boulders & Wall Rock. We carry boulders ranging from one to four feet in size. They are most commonly used for retaining walls, accent boulders, and water features. For your convenience we deliver in and around the Portland Metro area including: Canby, Clackamas, Damascus, Gladstone, Happy Valley, Lake Oswego, Milwaukie, Oregon City and West Linn
  3. Mossy Boulder. This moss boulder has a perfect dip in it for a planter! Moss Boulders used in a waterfall. Brody, Bernice, and Bojangles inspecting a load of mossy boulders. Brody's hand in an imprint on a moss boulder. Moss Boulder. Moss Boulders were used to outline this pond installed by Independent Landscape
  4. Barn Red Boulders. Also Known As: Raven Red Boulders, Slate Red Boulders Color: Burgundy Size: 6 - 3
  5. CARURBODY Red Lava Rocks for Plants -100% Pure Volcanic Rock No Dyes or Chemicals-Best Lava Stones Top Dressing for Cacti Succulents Plants,Bonsai. 4.5 out of 5 stars 92. $14.99 $ 14. 99. Get it as soon as Wed, Jul 14. FREE Shipping on orders over $25 shipped by Amazon

Featherock, Inc. - The lightweight, natural stone

  1. Mix Horticultural Lava Rocks Volcanic Rock for Plants Succulent and Cactus Bonsai Gritty Soil Mix Gravel Plant Drainage Volcanic Potting Rocks Pumice for Terrarium Fairy Gardening Top Dressing 2.2lb. 4.5 out of 5 stars 356. $10.99 $ 10. 99 ($0.31/Ounce) Save more with Subscribe & Save
  2. Boulders can make great accents in any landscaping project! The sheer, rugged beauty of these medium to large sized rocks can take your landscape design from good to great. Use them as accents in landscape or garden beds, borders for ponds and waterfalls. Strategically build them into patios, or use them to build retaining walls
  3. -Boulders are available by the crate or in bulk. Our in-stock crated boulder products are: FR-6 (6-12″), FR-12 (12-18″), and FR-18 (18-24″) in Silver Grey and Charcoal. Crates of other colors or sizes can be made to order. Please contact Featherock for inquiries
  4. Samples: Whilst it is impractical to send full size samples of this product by post, we are happy to forward either small pieces or pebbles in order to demonstrate colour and form. Order Online Now or Telephone orders Welcome - 9.00am to 5.00pm Monday / Friday. Alternative Volumes. Volcanic Lava - Black Rock. Crate. £192.00
  5. Natural volcanic lava rocks are excellent base layers and cost-effective fillers for gas fire pits and fireplaces. Fire glass, ceramic balls and other decorative fire pit products can be added on top of the fire rock for effect. If you like the look of these angular lava rocks alone, theyre an affordable way to fill a fireplace. Lava rock is available in two sizes and colors
  6. Igneous Rock Specimens. Igneous rocks are formed through the cooling and solidification of magma or lava and they may form with or without crystallization. Intrusive, or plutonic, igneous rocks form when molten rock (magma) cools underground. Extrusive, or volcanic, igneous rock form when molten rock (lava) cools on the surface
  7. erals. They are typically formed when air bubbles inside of volcanic rock form hollow cavities. Over time, as

Landscape Rocks and Boulders are a low maintenance and cost effective method of spicing up any landscaping project. Whether you are looking for the Decorative Rock Phoenix AZ homeowners want for their yard or walkway project, Lava Rock for a gas BBQ or outdoor fire pit, Rip Rap for erosion control, or Boulders as larger yard accents, All Rock Supply has landscape rocks and boulders suitable. volcanic rock for sale range on Alibaba.com. These rocks are useful in the construction industry.. volcanic rock for sale are naturally sourced stones in slab, cube stone, and tile forms. Goods in amorphous forms are also in stock. volcanic rock for sale on Alibaba.com in varying thickness, size, and shapes are in stock. They are tough and. POPETPOP Volcanic Rocks Natural Underwater Lava Rock Ornament Lava Stone Filter Material for Fish Tank 450g. $18.59 $ 18. 59 ($18.59/Count) 5% coupon applied at checkout Save 5% with coupon. FREE Shipping. Natural Slate Stone -1 to 3 inch Rocks for Miniature or Fairy Garden, Aquarium, Model Railroad & Wargaming (5lb

large volcanic rock for sale range on Alibaba.com. These rocks are useful in the construction industry.. large volcanic rock for sale are naturally sourced stones in slab, cube stone, and tile forms. Goods in amorphous forms are also in stock. large volcanic rock for sale on Alibaba.com in varying thickness, size, and shapes are in stock. They. 200 Black Volcanic Lava Rocks 2 - 3 Fish Tank Aquarium Terrarium BBQ Fire pit. Brand New. $29.50. Buy It Now. Free shipping. 9 watchers. Z S p Q L o n s A M G 5 o G 2 r e d W R. Watch. New Listing 2.3 NATURAL ROUGH SNOWFLAKE OBSIDIAN VOLCANIC STONE MINERAL FROM UTAH USA 74.5g. Brand New. $0.99. Time left 6d 17h left. 0 bids +$6.00 shipping Mix Horticultural Lava Rocks Volcanic Rock for Plants Succulent and Cactus Bonsai Gritty Soil Mix Gravel Plant Drainage Volcanic Potting Rocks Pumice for Terrarium Fairy Gardening Top Dressing 2.2lb. 4.5 out of 5 stars 416. $10.99 $ 10. 99 ($0.31/Ounce) Save more with Subscribe & Save CARURBODY Black Lava Rocks for Plants -100% Pure Volcanic Rock No Dyes or Chemicals-Best Lava Stones Top Dressing for Cacti Succulents Plants,Bonsai. 4.5 out of 5 stars 63. $12.99 $ 12. 99. Get it as soon as Thu, Jun 17. FREE Shipping on orders over $25 shipped by Amazon 3 Cataract 8' oar shafts w/ 1 blade. $200 (North Boulder) pic hide this posting restore restore this posting. $60. favorite this post. Jun 15. A Baker's Delight! Cake Pans, Loaf Pans, Cookie Sheets, and more! $60 (Boulder

The Landscape Connection has been providing the highest quality landscaping and construction materials to Northern Arizona for over 20 years. Now, the Landscape Connection Commercial Supply Yard provides a full range of quality volcanic cinders and lava rock products and construction aggregate materials in BULK quantities for Contractors AND Suppliers. Cinder products are offered in both red and Feather Rock boulders are products of a rare volcanic occurrence, formed by a molten lava explosion which released gasses to create the distinctive spongy texture of Feathe Rock. We have Feather Rock Boulders in many Colors: Silver Grey, Charcoal, Brindle, Buckski

The design of these lava rocks works to help conserve gas consumption to extend the life of your propane tank. The MRBBQ 7 lb. Lava Rock is a replacement volcanic rock for most types of gas grills. It heats up quickly and evenly, saving on gas consumption. 1 bag covers about 300 sq. in. For gas grills using volcanic rock. Reduces risk of flare-up 2-4 Black Lava Rock. This is a porous, round, black volcanic material. Commonly used for xeriscaping, and fire pits. Available in a variety of sizes. Applications Include Fire Pit / Fire Place Fl... $95.00. Add to Cart. Add to Wish List Compare this Product Can Landscape Rocks be returned? Yes, Landscape Rocks can be returned and have a 90-Day return period. What is the best-rated product in Landscape Rocks? The best-rated product in Landscape Rocks is the 5.4 cu. ft. 500 lbs. 1/2 in. to 1 in. Small Black Bulk Decorative Lava Rock

Black Obsidian Rock - black boulders Carroll's Building

Boulders can seriously upgrade the appearance of the water features in your landscape. Their inclusion may even inspire you to create new additional features that will improve curb appeal and increase property value. Landscape boulders are often chosen to introduce serene cascades and to line ponds, springs or streams, and for dry waterway beds Lava Rock technically is molten or liquid rock that come out of an erupting volcano at temperature of 1,300—2,000 degrees. When lava cools it forms igneous rock. Depending where and how long it cools it can form different types of rock, including Basalt, Obsidian, Volcanic Rock and many others Basalt is a volcanic rock that is used for a variety of construction and decorating needs. If you're looking to redesign a yard or garden, or even enhance an existing one, basalt columns and boulders are an excellent choice CARURBODY Red Lava Rocks for Plants -100% Pure Volcanic Rock No Dyes or Chemicals-Best Lava Stones Top Dressing for Cacti Succulents Plants,Bonsai. 4.5 out of 5 stars 84. $11.99 $ 11. 99. Get it as soon as Thu, Jul 8. FREE Shipping on orders over $25 shipped by Amazon Hours of Operation. Mon-Fri 7:00am-5:30pm Sat 7:00am-4:00pm Sun Closed Location. Vista Landscape Center 951 Wigwam Pkwy. Henderson, NV 89014. Material Calculato

Black Lava Boulders For Sale Direct Quarry Landscape Suppl

All Black Landscape Rocks can be shipped to you at home. What is the cheapest option available within Black Landscape Rocks? Check out our lowest priced option within Black Landscape Rocks, the 0.11 cu. ft. 10 lbs. 1/2 in. to 1 in. Black Decorative Lava Rock by Butler Arts. What are some of the most reviewed products in Black Landscape Rocks 2040 Hwy 66 Rockwall TX 75087 Phone: 214-771-0002 Fax: 972-722-0108 Email: Marilyn@ClassicRockInc.com Office Hours: Monday - Friday: 8am to 5pm Saturday: Closed Sunday: Close Volcanic Rocks 400-600mm. Varying volcanic rocks in colour, texture and size. Adds a rustic element to any landscape design. Price Per Rock $16. Alpine Feature Rocks. A large feature rock that has been naturally river worn. Has an uneven texture and can have a multicolour appearance. Rocks vary in sizes, wear and texture

I like to use rocks from 5″ - 8″. Larger rocks take too long to get hot, small rocks cool down too fast. Limestone will slowly 'wear' away and usually needs replacing after 6-12 uses. Granite lasts longer. I have no experience with other rocks suggested here, but have exploded a few unsuitable ones in a fire circle View photos of our decorative boulders. FREE phone quote. Large selection. Colorful choices. Visit 8585 Kiefer Blvd or call 916-383-1300 today The most common rocks for gardens, rock walls, and architectural accents in Hawaii are moss rock, coral and lava. Naturally, you wouldn't want to go tromping through the forest or deep sea diving to collect specimens of natural rock, especially when it's not necessary. Big Rock Fabricators has lightweight, realistic-looking replicas of these.

Landscaping Boulders Quarry Direct Low Price

Sierra Boulder Natural Sierra Boulders and Roc

We have a widespread range of garden rocks for sale. Many rock gardens are designed for structural use and to provide a low maintenance solution for retaining. Providing exceptional customer service is the first priority of Transrock. For further details, call us on (03)9722 0920 or visit our website www.transrock.com.au lava pumice stones/ volcanic rocks. $50.00-$200.00/ Ton. 1 Ton (Min. Order) CN Xiamen Eastwood Stone Co., Ltd. 11 YRS. 4.9 ( 5) Contact Supplier. The individual holes of lava stone make it very attractive compared with other natural stone, it is exclusive, hardness with good density, heat resistant and never froze , lava stone become the.

Feather Rock Boulders - The Rock Pile Garden Center

Some of the most reviewed products in Red Landscape Rocks are the Southwest Boulder & Stone 0.25 cu. ft. 3/8 in. Arizona Bagged Landscape Rock and Pebble for Gardening, Landscaping, Driveways and Walkways with 132 reviews and the Rain Forest 0.40 cu. ft. 3/16 in. 30 lbs. Red Gravel with 127 reviews A Honeycombe volcanic Rock in assorted shapes and sizes varying from 200mm to approx. 1mt in diameter. Typically used as a feature rock in gardens, water features, and around ponds, but can also be used as garden bed border edging and retaining walls. Some rocks have a natural cover of moss on the surface which adds to the character Box of Black Lava Rocks BBQ Grill Fire Pit Fish Aquarium 1-3 R&D Rock and Stone. $9.99. $15.50 shipping. BOX of Extra Large Volcanic Lava Rocks 4 - 5 Fish Reptile Aquarium Terrarium. $24.79. Free shipping. Set of 6 — 2 - 4 Lava Rock Stone Fish Tank Aquarium Landscaping Red Brown Black hot sale 3-5 cm black Volcanic Rock decorative rocks for Fish pond decoration. Ready to Ship. $105.00-$120.00/ Kilogram. 25 Kilograms (Min. Order) $59.79/Kilogram (Duty Incl.) CN Shijiazhuang Yuancang Trading Co., Ltd Small Volcanic Ash and Xochicopal Oil Soap~ Natural Exfoliating and Nurturing for Skin~ Natural Mexican Native Medicine-Small Soap. Teyolia13. 5 out of 5 stars. (619) $3.95. Add to Favorites. Quick view. Volcanic Rock Powder, boost any plant, tree, flower or garden. Soil amendment, plant food

Boulders & Specialty Rocks Bedrock Expres

Blue Obsidian Natural Tool Oregon 290 grams Lapidary Rough Display. $9.99. 0 bids. $5.92 shipping. Ending Jun 20 at 5:37PM PDT. 3d 16h. Black Obsidian Natural Stone Oregon 1 lb. 2.2oz. Lapidary Rough Display. $6.99 Other Rocks, Fossils & Minerals for sale | eBay. Helenite is Amazing Gemstone made from the fused volcanic rock dust from Mount St. Helenite is a man-made glass made from the fused volcanic rock dust from Mount St. Helens and marketed as a gemstone. Helenite was first created accidentally after the eruption of Mount St. Helens in 1980 Rocks Plus Pty Ltd range rocks, stone and pebbles in all shapes, sizes, colours and textures to provide our customers with a wide variety of choice to meet all different retail, commercial and residential landscaping applications including but not limited to retaining walls, steps, waterfalls, ponds, swimming pool surrounds, dry and running creek beds Lava Rocks - 3 lb. Box, Perfect for Aquariums, Terrariums, Aromatherapy. ArizonaLavaRocks. 5 out of 5 stars. (8) $18.00 FREE shipping. Favorite. Add to. Rare! Bag of 5 Red, Volcanic Lava Rocks - great for building aquarium caves, decorations

Volcanic rock dust has long been used by organic and sustainable farmers to promote soil health and to grow nutrient dense crops in a variety of conditions. Not all rock dust is alike, however. Created through the cooling and solidification of dense viscous lava, volcanic basalt is an igneous rock that underlies much of the Earth's oceans Old Stock LAST Set of 2500.0ct Natural Green Opal Sodalite Quartz Assorted Gem. $5.50. 7 bids. Free shipping. Ending Jun 6 at 4:54PM PDT. 5d 12h. Polished Kenworth Fordite Cab -Detroit agate. -Fordite Frenzy- Lapidary. $45.00 Volcanic rock, often referred to as lava rock, is popular for use in landscapes because it does not decompose and require annual replacement like organic mulches do. Its porous nature also allows for good drainage. However, before you add volcanic rock to your landscape, it is important to look at the disadvantages.

Black Cheap Basalt Volcanic Rock For Sale - Buy Lava Stone

Boulder, Landscape Boulders, Bedrock Rocks, Richmond

Polished Agates - Banded agates are extremely popular right now and we have a wide selection of them from many different locations. Agates are a variety of microcrystalline quartz that grows inside a cavity within a rock. The banded patterns that are produced are a record of the changes in the chemistry of the fluids that are depositing minerals on the walls of the cavities 1536g Rough Achat Agate Thunderegg China 160 x 110 x 90 mm. $59.99. $35.00 shipping. or Best Offer. 1675g Rough Achat Agate Thunderegg China 140 x 110 x 100 mm. $59.99. $38.00 shipping. or Best Offer Landscaping Rocks. We have access to and can source, deliver and place an extensive range of different landscaping rocks, garden rocks, stone, boulders and pebbles. We have the ability to source rocks in many unusual shapes and sizes, from a rock size that fits comfortably in your hand, to large rocks and boulders bigger than a car

Large sizes, mostly volcanic rocks, brown. Own pick up and removal. Drainage, volcanic scoria in 7mm, 20mm and 40 mm. Also Landscaping rocks all sizes from 200mm-400mm up to 10 tonne basalt rock. Victoria's unique volcanic region. Delivery available please message or email for quote on transport Landscaping Rocks. We source, deliver and place a large range of landscaping rocks, boulders, stone and pebbles in many different shapes, sizes, colours and textures for both commercial and residential needs. Landscaping rocks are low maintenance and are an effective way to transform your garden and can make a stylish statement

Boulders and Wall Rock - Clackamas Landscape Suppl

Large volcanic rocks. Approx 60 rocks. Average weight approximately 5 - 15kg. $100 the lot. About 1 million years old and still going strong. Perfect condition for a rock. Prefer to sell in bulk . But I'll do singles for $3 - $5 ea depending on size Usually pay $110 per cubic metre plus $49 freight for a minimum 1 cubic metre. This is half the minimum and cheaper. $15Negotiable. Patterson Lakes, VIC. 23/06/2021. Free - 2 large ornamental rocks for garden. 2 large ornamental rocks. Would look great for display in a rockery. Look volcanic but heavy Lava Rocks/Charcoal Grill Stones/Volcanic Stones B . Lava rocks/charcoal grill stones/volcanic stones. 5 rocks - approximate dimensions:6 x 6 x 37 x 6 x 44 x 3 x 35 x 4 x 46 x 4 x 3. Postage offer is for uk buyers only thank you for looking at my items for sale Volcanic rock THIN SECTION COLLECTION 5 microscope slides lava pyroclastic. £25.00. £2.50 postage. or Best Offer. 2 watching. Large Volcanic Lava Rock From Mount Etna. Mounted. £30.00. £4.70 postage Occurrence and ClassificationFragments of the Earth's mantle are frequently transported to the surface via volcanic rocks that are dominantly alkaline in nature. These fragments range up to sizes in excess of 1 m across. The term mantle xenoliths or mantle nodules is applied to all rock and mineral inclusions of presumed mantle derivation that are found within host rocks of volcanic origin.

Feather Rock landscaping boulders are charcoal gray and silver gray in color. Their irregular shape make them wonderful additions to your area. They are products of a rare volcanic occurrence, formed by a molten lava flow which trapped air that later escaped during the cooling stage. They are very porous and easily carved, and very lightweight Lava Rock Wholesale Rocks Black 10-20 Mm Lava Rock Wholesale Black Lava Stone Volcanic Big Lava Rocks $100.00-$150.00 / Metric Ton 20.0 Metric Tons (Min. Order

Boulders and head size moss rocks Thinking of creating a river bed we have Cobblestone of all sizes. Lava Rock Base Rock. Moss Boulders. Pebble Beach Path Fines. Drain Rock. Pea Gravel. 1/4 x Dust. 3.5 x 2.5 Cobblestone. Small Cobblestone. Moss Boulders. 4 inch Plus Cobblestone Sand. Fill Sand is washed and PG&E approve Hawaiian Volcano Plant™ (Anthurium species) Here's a unique gift for any gardener. The Hawaiian Volcano Plant™ is a Red Anthurium that has been specially hybridized to grow as a trouble-free houseplant. It's planted on a responsibly harvested cinder blessed by a Kahuna (a spiritual leader of the Hawaiian community) to bring joy and. Boulders, Slate and Flagstone for every landscaping need. Whether you seek large river rocks to create the perfect natural fountain look or large boulders to form an attractive non-retaining wall, Tri County Landscape Supply offers a huge selection of landscape boulders, large rocks and stone materials for your landscaping projects and wholesale landscaping needs At TGM rock and gravel supply store, you will find a large selection of landscaping rocks and gravel for sale. TGM rock and gravel suppliers are located in Houston, TX, and is open to the public. All gravel and stone are sold in bulk and are available for pick-up by truck or trailer. Also, Texas Garden Materials offers gravel delivery

Glacial boulder © Callum Black :: Geograph Britain and IrelandRed Lava Boulders | Quarry Direct Prices

We put lots of colorful, small rocks in this one. $150. Now, let's get real. We prefer to send you as many opae ula you want at $1 each plus shipping and it includes the care booklet, the live water, the live rocks and the starter food. That's what we do best. 50 is the minimum order. You can provide the aquahome cheaper than we can because of. Volcanic rocks are primarily categorized into two main categories, the felsic rock, and the mafic rocks. The difference is dictated by their composition. Felsic rocks are rich in silicon and aluminum minerals, whereas mafic rocks comprise of iron and magnesium. Because of their chemical composition, lava rocks classify as basalts

Specially selected from around the world, these dramatic stones are the backdrop of the most spectacular freshwater aquascapes. All natural, no paints, dyes, or plastic coatings. Use with our Super Naturals™, Eco-Complete™, Instant Aquarium™, or Samurai Soil™ to create strikingly beautiful freshwater aquascapes 1300 886 303 MENU. Landscaping Rocks Melbourne. Melbourne's Cheapest Rock Supplier. At Rock Walls Melbourne we also provide wholesale sales of rock. The rock is sold in tandem truck loads, approximately 10m3. Rock sizes are graded to suit your machinery. We do our best to meet any sizing requirements. All prices are based on a 10m3 load inc GST Our volcanic rocks are 100% all-natural, porous, and extremely lightweight in comparison to most natural rocks. These have an incredible number of uses in a live vivarium, and have been being tested by NEHERP staff since 2015. One side of each rock is cut flat to increase it's usefulness, and to help minimize the risks associated with one. 21 Results: landscaping rocks. in Tasmania. Sandstone boulders rocks. Large sandstone boulders for sale. 12T truck load delivered Hobart area for $550 inc gst, a saving of nearly $400 a load. These random boulders range from 100ish kg up to 350ish kg. You will need a machine to move them into place

Featured in a vibrant red, our lava rocks are long-lasting and low-maintenance. The Pavestone Lava Rock will not fade, wash or blow away and unlike wood mulches, it does not attract wood pests, such as termites and ants. size: 0.5 cu.' easy to spread, controls erosion, & retains moisture red volcanic lava rock use in gardens, pathways. List of Volcanic Rocks. Check out the List of Volcanic Rocks here. Igneous rocks may form with or without crystallization either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.Volcanic rocks which are also known as extrusive igneous rocks include all the rocks resulting from eruptions of lava Landscaping rocks and stones are just as integral a part of any natural landscape as plant life. Recognizing this fact, at Van Beek's Landscape Supply we not only supply for the 'living' in your garden, but also the 'non-living'. And, since we specialize in the Southern Ontario region, our range of landscaping rocks reflects the rock. Volcanic Rock (Lava Rock); Aquarium and Pond Biological and Mechanical filter media. • Can work for de-nitrifying (nitrate removal) due to deep pores and over all surface area in comparison to over all size and surface area exposed to water flow & oxygen. We hand select this volcanic rock VERY carefully for the size that is best for most.