Flagstone

Three21’s quality flagstone is in stock at our yard. Purchase by weight and get it to your door by delivery or pick up at our storefront. Please call or stop by for pricing.

Stacks of flat rocks behind chicken wire on wooden pallets in a grassy outdoor area.

Pennsylvania Blue Flagstone

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A durable natural stone known for its smooth surface and consistent texture, commonly used for patios, walkways, and outdoor living areas because it lays flat and creates a clean, finished look.

COLORS: BLUE, FULL COLOR
DIMENSIONS: 1-3” THICK, 2-4” THICK

A stack of flat, irregularly shaped sandstone slabs arranged on a wooden pallet outdoors, surrounded by dirt and grass.

Tennessee Flagstone

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A versatile sedimentary stone valued for its strength and natural variation. Suitable for patios, stepping paths, and garden spaces where a rustic, organic appearance is preferred.

WALL STACK: 1-1, 3/4” THICK
PREMIUM SLABS: 1-1, 3/4” THICK

Stacked irregular-shaped stones enclosed with wire mesh on a grassy field, likely for landscaping or construction.

Irregular stand-up

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Tall, irregularly shaped pieces of stone used for vertical accents such as garden edging, small retaining features, or decorative standing elements in landscape design.

DIMENSIONS: 1.5-2.5” THICK
COLORS: BLUE, FULL COLOR, LILAC

Stacks of gray stone tiles and bricks are arranged on grass outside, ready for construction or landscaping.

Tumble Blue Stone Pavers

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Naturally weathered pavers with softened edges that create an aged, textured appearance. Often used for patios and pathways where a more relaxed, old-world style is desired.

AVAILABLE TYPES: IRREGULAR & DIMENSIONAL

Stack of flat, rectangular stone slabs tied with a wire, sitting on grass in an outdoor setting.

5”-6” Pennsylvania blue stone irregular steppers/slabs

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Thick, uneven stone pieces intended for heavy-use walkways or bold stepping paths. Their substantial weight helps them sit firmly in soil or gravel.

DIMENSIONS: 5-6” THICK
PALLET AMOUNT: 2-3 EACH

A stack of firewood enclosed with wire mesh on a grassy surface.

Tennessee Rubble Strip

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Rough, broken pieces of stone typically used for borders, small retaining features, or stacked accents. Provides a rugged, naturalistic look in any landscape project.

COLORS: TAN, GRAY
DIMENSIONS: 4-5” THICK, 5-6” THICK

Stacked stone slabs secured with black straps and purple and blue clips outdoors.

Tennessee Stair Treads

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Thick, flat stone slabs cut for use as outdoor steps. Their weight and durability make them reliable for high-traffic entryways or transitions between landscape levels.

DIMENSIONS: 18” x 36” x 4”-5” & 5”-6” THICK — 18” x 48” x 4”-5” & 5”-6” THICK

Stacks of natural stone tiles secured with black straps outdoors on grass, with other stacks in the background.

Tennessee Flagstone Caps

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Flat stone pieces used to top walls, columns, or other hardscape structures. They provide a finished appearance while adding stability and durability to the structure beneath

DIMENSIONS: 12” x 12” x 2-2.5” THICK — 12” x 24” x 2-2.5” THICK — 24” x 24” x 2-2.5” THICK

Delivery fee & minimums may apply. All product is natural. Shape, size, color, and other characteristics may vary slightly from photo.