Blue Quarry Rock (Basalt) – Bulk Blue Gravel & Road Base Delivery

Blue Quarry Rock is a durable, angular basalt-based aggregate known for its deep blue-gray color, strength, and versatility. Sourced from hard volcanic stone, this material is widely used across driveways, road base, drainage systems, pathways, and construction projects where performance and longevity matter.
 
Commonly searched as blue gravel, blue road base, blue rock, blue quarry rock, and blue pea gravel, this material delivers both structural reliability and a clean, modern appearance—making it a favorite among contractors, landscapers, and homeowners throughout Marin, Sonoma, Alameda, Contra Costa, San Francisco, and San Mateo counties.
 
Available in multiple sizes—from fine quarry dust to large drain rock and erosion control stone—Blue Quarry Rock can be tailored to your specific project needs and delivered directly to your job site with our residential-friendly dump trucks.
 
Hard basalt composition
Angular for excellent compaction and drainage
Ideal for driveways, base rock, trenches & utility work
Bulk delivery available across the North Bay & Bay Area
 
 
Available Sizes & Common Applications
Blue Quarry Rock is available in a wide range of screened and crushed sizes, making it suitable for everything from fine compaction layers to heavy-duty drainage and erosion control. Each size serves a specific purpose—choosing the right one ensures performance, longevity, and compliance with typical construction standards.
 
¼″ × Dust (Blue Quarry Fines)
Finely crushed basalt with stone dust that compacts tight.
Best for:
Pathways & walkways
Sub-base leveling
Utility trench bedding
Compactable surface layers
Often searched as blue gravel fines or blue quarry dust.
 
¼″ Clean Blue Gravel
Small, angular gravel with no fines for free drainage.
Best for:
Drainage trenches
Pipe bedding
Utility backfill
Landscaping designs
Commonly used where water flow is required without compaction.
 
⅜″ Blue Chip Gravel
Uniform, clean crushed stone with excellent drainage.
Best for:
French drains
Trench backfill
Landscape drainage
A popular alternative to blue pea gravel when angular stone is preferred.
 
½″ Blue Drain Rock
Versatile mid-size gravel offering balance between drainage and stability.
Best for:
Drainage systems
Foundations
Perimeter drains
Light traffic driveways
General landscaping
 
¾″ Blue Drain Rock
Larger clean stone designed for maximum water flow.
Best for:
Heavy drainage
Soakaway pits
Retaining wall backfill
Driveways
Highly searched as ¾″ blue gravel and blue drainage rock.
 
¾″ Blue Base Rock
Crushed basalt with fines that locks together when compacted.
Best for:
Driveways
Road base
Paver and concrete sub-base
This is the most common material customers mean when searching blue road base or blue quarry base rock or blue shale
 
1.5″ Blue Drain Rock
Large angular stone for high-capacity drainage.
Best for:
Culverts
Deep drainage zones
Erosion control applications
 
Larger Erosion Control Sizes (1″×4″, 1″×6″, 2″×4″, 3″×6″, 4″×8″)
Heavy basalt armor stone.
Best for:
Slopes and embankments
Channels and swales
Shoreline and runoff protection
Often classified as rip rap–style blue quarry rock.
 
Delivery Information
Blue Quarry Rock is available for bulk dump-truck delivery throughout Marin, Sonoma, Alameda, Contra Costa, San Francisco, and San Mateo counties. We specialize in residential-friendly deliveries, making it easy to get blue gravel, blue road base, or blue drain rock delivered directly to your driveway or job site.
Delivery method: Dump truck (loose bulk material)
Delivery cost: Time & distance based
Typical rate: ~$95/hour (round-trip)
Truck access: Requires clear access and a safe dump area
One material per load to ensure accurate quantity and quality
Material is dumped in a single pile unless otherwise approved in advance.
 
Frequently Asked Questions (FAQ)
Q. Is Blue Quarry Rock the same as blue gravel?
Yes. Blue Quarry Rock is commonly searched as blue gravel, blue rock, and blue quarry rock. It is a crushed basalt material available in multiple sizes, from fines to large drain rock.
 
Q. What size should I use for a driveway or road base?
For driveways and base layers, ¾″ Blue Base Rock or the 3/4" Drain Rock is the most common choice because it compacts tightly and supports vehicle loads.
 
Q. Can Blue Quarry Rock be used for drainage?
Absolutely. Clean sizes such as ¼″ clean, ⅜″ chip, ½″ drain rock, and ¾″ drain rock are ideal for drainage trenches, French drains, and retaining wall backfill.
 
Q. Is this the same as blue pea gravel?
Not exactly. Blue Quarry Rock is angular crushed stone, while pea gravel is rounded. Many customers searching for blue pea gravel choose this material instead for better stability and performance.
 
Q. Does the color stay blue over time?
Yes. The blue-gray color comes from the natural basalt stone and does not fade. Shade may vary slightly depending on moisture and quarry batch.
 
Q. Are sizes exact?
All bulk materials are sold as nominal sizes. Natural variation in color, moisture, and stone shape is normal.