Volcanic Basalt Boulders
Description
Volcanic Basalt Boulders are a great choice for entryway focal points, retaining wall accents, and large-scale landscape features because of their substantial size, dense volcanic composition, and bold dark color. With its deep gray to blue-black base, occasionally accented by tan and rust staining on weathered faces, this boulder brings a striking, modern character and serious structural presence to any landscape. Whether used as a standalone feature boulder, a retaining structure accent, or a dry creek bed anchor point, Volcanic Basalt Boulders deliver dramatic scale and exceptional density to any project.
Quick specs
Available at Our Salt Lake County Landscape Center
Our boulders are stocked in bulk at our Salt Lake County landscape center and are available for both pickup and delivery throughout the surrounding Utah areas. Because every boulder is unique, we recommend stopping by in person to hand-select the specific pieces that best fit your project.
Bulk Supply
We stock a wide range of boulder sizes so you can find the right piece for your project.
Loaded by Equipment
Our team safely loads boulders using skid steers and heavy equipment for secure transport.
See it in Person
Stop by and hand-select the exact boulders you want — no surprises when they arrive.
Available at This Location
Hand Selection
Come pick the exact boulders you want — size, shape, and color can vary piece to piece.
Pickup
We load your boulders on-site using machinery suited to their size and weight.
Delivery
We offer delivery for boulders of all sizes, including oversized feature pieces.
Placement Guidance
Ask our team about equipment needs for placing larger boulders on your site.
Live Support
Visit us in person or call or text our team with any questions—we’re here to help.
Boulder Size & Weight Guide for Volcanic Basalt Boulders
| Size Class | Approx. Weight | Typical Use |
|---|---|---|
| 12″–18″ | ~100–275 lbs | Accent / Border |
| 18″–24″ | ~275–650 lbs | Small Feature |
| 24″–36″ | ~650–2,000 lbs | Feature Boulder |
| 36″–48″ | ~2,000–4,000 lbs | Statement Piece |
| 48″+ | 4,000+ lbs | Requires Equipment |
Note: Basalt is significantly denser than most other boulder types we carry, so weights run notably heavier than a granite or sandstone boulder of the same size. Weights are approximate and will vary based on individual boulder shape. Boulders 24″ and larger typically require a machine (skid steer, forklift, or similar) for placement and cannot be moved by hand — plan for heavier-duty equipment and transport than you might expect for a comparably sized boulder of another material. Let our team know your project's access and equipment situation before ordering so we can help you plan delivery and placement.
Product details, what you should know
- Sizing: Boulders are individually selected and range broadly in size. Photos represent the general look of this material — exact size, shape, and color will vary from boulder to boulder.
- Cleanliness: Natural quarried stone with occasional dirt or dust on the surface from handling; a light rinse will restore true color.
- Appearance: Fractured boulders featuring a deep gray to blue-black volcanic base, with occasional tan and rust staining visible on weathered faces. This is a notably dense, heavy stone compared to our other boulder offerings. Colors deepen and become richer when wet.
- History: Material has remained generally consistent in color and character over time. The deep gray to blue-black volcanic composition is typical of this stone.
- Also known as: Commonly referred to as basalt boulders, volcanic rock, or lava boulders.
Volcanic Basalt Boulders are among the densest, heaviest stone we carry — their deep gray to blue-black color gives them a bold, modern look, but the real story is their weight. A basalt boulder will weigh noticeably more than a granite or sandstone boulder of the same size, so plan for heavier-duty equipment and transport when working with this material. Because every boulder is one-of-a-kind, we strongly recommend visiting in person to hand-select the specific pieces for your project — and to confirm you have the right equipment lined up before committing to a size.
- Stock: In Stock
- Unit: Ton
- Weight: 2,000.00lb
- SKU: RKN-669-0001
- Bin Location: R9