Florida Keystone Authentic Florida Keystone pool deck and square edge coping installed and weathered

Florida Keystone

Authentic Florida Keystone

From the Florida Keys

Cut from areas under construction in the Florida Keys, this rustic coral stone is swirled with large amounts of brain and fan corals. Consistent, very white, with many large and small holes. Seen on South Beach hotels, Lincoln Road, Fisher Island Estates and countless Florida homes, this is a one-of-a-kind authentic material.

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Cool to the Touch

Stays cool regardless of sun exposure

Naturally Non-Slip

Saw cut unfilled, safe when wet

Multiple Formats

Tiles, pavers, roughface, coping

Natural Patina

Ages to an "Old World Castle Look"

Custom Orders

Architectural elements, 30-40 day lead

Specifications

Authentic Florida Keystone

Tile Format (1")

12 × 12 × 1"
12 × 24 × 1"
16 × 16 × 1"
18 × 18 × 1"
1" Pattern

Paver Format (2")

12 × 12 × 2"
12 × 24 × 2"
12 × 36 × 2"
12 × 48 × 2"
16 × 16 × 2"
16 × 24 × 2"
16 × 32 × 2"
18 × 18 × 2"
18 × 36 × 2"
24 × 24 × 2"
24 × 48 × 2"
36 × 36 × 2"
36 × 48 × 2"
2" Keystone Pattern
2" Flagging

Special Formats

Roughface / Splitface 3" to 5" thick
3¼", 7", 10¾", 14½" × random lengths
12 × 24 × 2" Full Bullnose (one 24" side)
12 × 24 × 2" Straight Edge Coping
Raw Slabs up to 36" × 60" (2" thick)

Finish

Sawcut Unfilled Only

Honed & filled not recommended

Note: 12" lengths are 11¾" and 24" lengths are 23¾". True to size material available by special order. Other sizes, thickness or custom architectural elements: approx. 30-40 day lead time.

The Patina Process

Due to its high porosity, Authentic Florida Keystone is difficult to seal and maintain clean in exterior applications. Coral Classics by A&P does not recommend sealing it for exterior use.

The most common approach is to install the material in a natural saw cut unfilled finish and allow it to patina naturally. When exposed to the elements, the stone passes through stages of green and black, eventually achieving the "Old Castle Look" — appearing thousands of years old.

If used in interior applications and not exposed to weather, the material will retain its original color as installed.

Exterior

Sealing Not Recommended

Let the material patina naturally for the Old Florida Castle Look

Questions about sealing or the patina process? Contact us and our team will advise.

View our recommended sealer products →

Architectural Applications

Authentic Florida Keystone can be fabricated into fireplaces, columns, door surrounds, and other custom architectural designs. Its rustic character adds an authentic Old World South Florida feel to any project.

Chipped edges, saw blade marks and other natural irregularities are inherent to this material. These "imperfections" are precisely what gives it the "Old World South Florida Feel" that makes it so sought after by designers.

Famous Installations

Authentic Florida Keystone has been used extensively across South Florida, including South Beach hotels, Lincoln Road, Fisher Island Estates, Coral Gables, Coconut Grove and countless residential homes of all sizes.

For samples, pricing, or to discuss a custom project, please contact us directly.

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