Classic Premium Keystone

Classic Premium Keystone is a remarkable one of kind coral stone quarried from ancient coral blocks. The blocks that are cut are loaded with brain and fan coral fossilizations that are hundreds of thousands of years old.

It is very white and consistent in color from piece to piece and shade and tone. There are holes throughout this stone which brings an old-world charm and castle like characteristics to every application it is used in.

Made famous in South Florida in the 1950’s, this material has been and is still used, on some of the most luxurious homes, hotels and store fronts, for cladding, interior and exterior, architectural elements, driveways, patios, walkways, pool decks and more.

Being a true coral stone, it does not retain heat regardless of the sun exposure it endures and in its natural saw cut unfilled finish, is non slip when wet. If left unsealed after installation in an exterior environment, this material will “patina” over time and achieve the “Old Florida Castle Look”.

Installed and sealed properly with Dry Treat Sealers, it can be maintained and kept clean and white. A classic and still very popular material that has stood the test of time in today’s residential and commercial markets.

Classic Premium Keystone Sizing and Finish

Classic Premium Keystone is available in the following sizes.


  • 12x12x2"
  • 12x24x2”
  • 16x16x2"
  • 16x24x2”
  • 18x18x2"
  • 18x36x2"
  • 24x24x2"
  • 24x48x2"
  • 36x36x2"
  • 48x48x2" and 60” x 72” x 2” Slabs, Saw Cut Unfilled Finish.
  • Other thickness are available up to 20” thick by Special Order

Pool Coping:

  • 6x12x2”
  • 12x12x2" and 12 x24 x2", Saw Cut Unfilled finish, Straight Edge and Full Bullnose

Classic Premium Keystone Sealing

Classic Premium Keystone is a porous stone that can be sealed with a high-quality penetrating stone or marble sealer to close its pores and keep it manageable from staining or attracting mold or mildew.

Coral Classics recommends "Dry Treat Sealer" & products.

Floor Sealing

Classic Premium Keystone Architectural


For installation pictures, samples, pricing, or any other information you require, please refer to our website, or feel free to contact us by phone or email.

We look forward to hearing from you!

Classic Premium Keystone product range

Classic Premium Keystone real installation pictures

Please enjoy these beautiful installation pictures sent from our clients, they are real pictures on real houses. Unlike other companies we don’t use stock pictures! You can click on any picture to see it full size.
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