Sandstone Blocks and Boulders
Wheel sawn rough cut blocks and natural boulders for every project scale
Sandstone blocks and boulders from Sandstone World are quarry-direct natural stone products perfect for retaining walls, landscaping features and boundary fences across Brisbane, Gold Coast, Sunshine Coast, Northern NSW and across South East Queensland. Crafted by nature over millions of years and rediscovered by modern landscape designers, our blocks and boulders bring raw strength and timeless beauty to any outdoor project.
Other sandstone products for retaining walls
Need a different sandstone retaining wall look? Compare these alternatives if you want more uniform blocks, tighter tolerances or a more premium finished face.
B Grade 2-4 Sawn Sides
Our most economical sawn sandstone block option for large retaining walls, terraces and boundary walls.
Explore productB Grade Premium 4-5 Sawn Sides
Choose a cleaner sawn finish when your retaining wall needs more consistency without moving to A Grade.
Explore productA Grade 5 Sawn Sides
Ideal for premium retaining wall projects that need sharper lines, tighter tolerances and refined presentation.
Explore productQuad Sawn Blocks
A natural rockface sandstone option with strong colour variation for standout retaining wall projects.
Explore productBlock & Boulder Types
Natural Manhandables
200–300mm approx. — one face height off the ground. Sold in random lengths. Ideal for areas without machine access.
Hammered Manhandables
Grapefruit to beer carton size with one flat side. Perfect for retaining walls where machinery can't access. 1–2 man lift.
Natural & Hammered Random
Blocky boulders ideal for retaining walls with a rustic look. Great for landscaping, boundary fences and sub-divisional work. Sold in 12 or 25 tonne loads.
Machine-Moveable Blocks
From Dingo-size (300–400mm) up to 1000–1200mm. Available in B Grade, B Premium and A Grade with varying sawn sides for every application.
Size Specifications
Random Block Sizes
- Dingo: 300–400mm × random lengths
- Bobcat: 400–500mm × random lengths
- Excavator: 400–600mm × random lengths
- 600–800mm × random lengths
- 800–1000mm × random lengths
- 1000–1200mm × random lengths
B Grade (2-4 Sawn Sided)
- 400 × 1000–1100mm — ~400kg
- 500 × 1000–1100mm — ~600kg
- 600 × 1000–1100mm — ~900kg
Tolerance: Face ±100mm · Length 500–1500mm
B Grade Premium (4-5 Sawn)
- 400 × 1000–1100mm — ~400kg
- 500 × 1000–1100mm — ~600kg
- 600 × 1000–1100mm — ~900kg
Tolerance: Face ±80mm · Length 800–1200mm
A Grade (5 Sawn Sided)
Popular for retaining walls with a rough back for backfilling. Not finished for wall-facing use on the unsawn side.
- 400 × 400 × 1000–1100mm — ~400kg
- 500 × 500 × 1000–1100mm — ~600kg
- 600 × 400 × 1000–1100mm — ~600kg
- 600 × 600 × 1000–1100mm — ~900kg
Tolerance: Face ±30mm · Length 900–1100mm
A Grade (6 Sawn Sided)
Perfect for seating around fire pits, yarning circles, schools, council areas, and civil works. Most uniform in shape and size.
- 400 × 400 × 1000–1100mm — ~400kg
- 500 × 500 × 1000–1100mm — ~600kg
- 600 × 400 × 1000–1100mm — ~600kg
- 600 × 600 × 1000–1100mm — ~900kg
Tolerance: Face ±30mm · Length 900–1100mm
The roughback can be concave, convex or even broken on angles. ALL SIZES FOR OUR PRODUCTS ARE APPROXIMATE ONLY.
Need Help Choosing the Right Block?
Our team can help you select the perfect grade and size for your project.
Why Choose Sandstone World?
Quarry Direct Supply
Cut-to-order from our Helidon and Yangan quarries with quick turnaround times.
Built to Last
Natural sandstone that has stood the test of time for millions of years — durable and weather-resistant.
Versatile Applications
Retaining walls, boundary fences, garden features, fire pits, seating and more.
Frequently Asked Questions
We Deliver Across Queensland & Northern NSW
From Brisbane to the Sunshine Coast, Gold Coast and across Queensland into Northern NSW — we supply and deliver premium sandstone products to homes, builders, and landscapers.
Ready to Start Your Project?
Get expert advice and a free quote from our team today.