About Our Decorative Stone Range
We carry 27 decorative stone and gravel products, all supplied as 750kg bulk bags by Kelkay. Prices start at £190 for natural gravels and slate, rising to £399 for premium polished cobbles. Every bag is delivered free to your door by specialist courier. These are genuine quarried stone products — not dyed resin chippings that fade after one season. Browse our full garden decor collection for complementary products including paving slabs, stone pedestals and stone urns.
Why We Chose This Range
"We tested a dozen aggregate suppliers before settling on Kelkay. Their stone holds its colour year after year because it is natural — not coated or dyed. The 750kg bags are the most cost-effective way to buy decorative stone. You get genuine quarried material at roughly half the price per kilo compared with 20kg bags from garden centres."
— Matt, Garden Ornaments
Types of Decorative Stone We Offer
Gravel & Chippings
Angular stone pieces from 10mm to 20mm. Best for driveways, paths and weed-suppressing borders. Popular colours include Cotswold Stone (warm honey), Classic Pink (salmon), and Classic White. Prices from £190 per 750kg bag.
Slate & Granite
Flat, angular pieces in 20mm or 40mm sizes. Blue Slate, Plum Slate and Green Slate give a contemporary, dark finish around modern planting. Forest Green and Sunset Red granite add bolder colour. All £190 per 750kg bag.
Pebbles
Smooth, rounded stones in natural tones. Coastal Pebbles and Oyster Pearl (both £190) suit seaside-style gardens. Caledonian and Scottish Tweed (£250) offer richer earth tones. Coral White (£399) is a premium polished option.
Cobbles
Larger rounded stones from 40mm to 80mm. North Sea Cobbles (£250) create natural-looking borders. Italian Rose and Tuscan Glow (£270) bring warm Mediterranean colour. Beach and Pearl White (£359-£399) are premium feature stones.
Decorative Stone Comparison
| Product | Type | Colour | Price |
|---|---|---|---|
| Cotswold Stone Gravel ⭐ | Gravel | Warm golden honey | £190 |
| Golden Gravel | Gravel | Light gold | £190 |
| Blue Slate 20mm | Slate | Dark blue-grey | £190 |
| Plum Slate 40mm | Slate | Deep plum purple | £190 |
| Classic White Chippings | Chippings | Bright white | £250 |
| Cornish Silver Granite | Chippings | Silver grey | £250 |
| Caledonian Pebbles | Pebbles | Mixed earth tones | £250 |
| Italian Rose | Cobbles | Warm rose pink | £270 |
| Pearl White Cobbles | Cobbles | Polished white | £399 |
|
Matt's Pick: Best All-Round Decorative StoneBest For: Paths, driveways, borders — works with any garden style Why I Recommend It: Cotswold Stone is our most popular gravel for good reason. The warm honey colour complements red brick, pale render and natural stone equally well. It drains quickly, suppresses weeds under a membrane, and looks better as it weathers. Price: £190 |
Matt's Tip: Getting the Depth Right
For paths and driveways, lay decorative stone at 50mm depth over a weed membrane. At this depth, a single 750kg bag covers roughly 10m². For borders and feature areas where foot traffic is light, 30mm is enough — stretching coverage to about 16m² per bag. Always order 10% more than your calculation to account for uneven ground and edges.
Choosing the Right Stone for Your Project
Driveways and heavy foot traffic: Angular gravel and chippings lock together under weight and stay put. Cotswold Stone, Golden Gravel and Classic Pink are all excellent choices. Avoid rounded pebbles and cobbles for driveways — they shift underfoot and roll under car tyres.
Borders and planting beds: Any type works well around plants. Slate chippings in 20mm suppress weeds effectively and create sharp contrast against green foliage. Read our guide to positioning garden ornaments for tips on creating focal points within stone borders.
Water features and Japanese gardens: Smooth pebbles and cobbles create a natural stream-bed effect. Caledonian Pebbles and Coastal Pebbles work well around water features. For Japanese-style gardens, pair dark slate with Japanese garden ornaments like pagodas and lanterns.
Contemporary gardens: Blue Slate and Plum Slate give a clean, modern look. The 40mm size makes a bolder statement than 20mm. Combine with steel garden screens and architectural planting for a striking design.
Frequently Asked Questions
A 750kg bag covers roughly 10m² at 50mm depth. At a shallower 30mm depth for borders, coverage extends to about 16m². The exact area depends on the stone size and how level the ground is. We recommend ordering 10% extra to allow for uneven surfaces and cutting in around edges.
Yes, always lay a weed membrane before spreading stone. Without a membrane, weeds push through within weeks — even at 50mm depth. Use a heavy-duty landscape fabric, not cheap sheeting. Pin it down with metal pegs every 300mm and overlap joins by at least 150mm. The membrane also stops the stone sinking into soft soil.
Angular gravel and chippings are best for driveways. The sharp edges interlock under pressure and resist shifting. Cotswold Stone, Golden Gravel and Classic Pink all work well. Avoid smooth, rounded pebbles and cobbles — they roll under tyres and scatter onto paths. For the best result, compact a sub-base of MOT Type 1 before laying the decorative layer.
The number refers to the average stone size in millimetres. 20mm stone gives a finer, more even finish and is easier to walk on barefoot. 40mm stone makes a bolder visual statement and is better for larger areas where you want texture. Both sizes work equally well for weed suppression at the correct depth.
A specialist courier delivers the bag on a lorry with a crane. The driver places the bag on your driveway or as close to the laying area as the lorry can reach. You need a firm, level area at least 1.5m × 1.5m for the bag to sit. The courier contacts you to arrange a delivery day, typically within 3-5 working days of ordering.
Natural stone does not fade because the colour runs through the material. All our Kelkay stone is quarried, not dyed or coated. The colour you see when it arrives is the colour it stays for decades. Stone does look different when wet versus dry — slate appears darker and more vivid in rain, while light gravels brighten when dry.
Yes, mixing stone types creates defined zones and visual interest. Use different colours to separate a path from a border, or to mark the edge of a patio. Keep each stone type in its own area with a metal or plastic edging strip between them. Without edging, stones migrate and the boundary disappears within a season.