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.
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
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
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
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
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
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
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
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.