Citadel Stone in the Press
Independent publications that have commissioned or quoted our technical work on natural stone. Every entry below links to the original.
How to Tell Real Quartzite from Marble and Sandstone
Commissioned bylined article. A technical guide to separating quartzite from marble and sandstone, written to ASTM C616, C503 and C119, covering the limits of the glass and acid tests and the commercial names the trade routinely mislabels.
“Ask for test data under ASTM C616 and check the silica figure: 95% is quartzite, 90% is quartzitic sandstone, and the gap between them is the one most buyers never hear about.”
Designing Buildings That Are Easier to Maintain Without Losing Design Quality
Expert contributor. On specifying stone by measured water absorption rather than appearance, choosing finishes that hide wear outdoors, and the drip groove detail that keeps a pool surround from streaking.
“The highest-leverage decision is selecting stone by measured water absorption, not by looks. Two stones can be identical on a sample board, but the denser one resists staining, freeze-thaw damage, and moss for decades.”
Materials: New Limestone for Landscapes and Pools
Materials feature covering our limestone for landscape and pool applications, in Stone Update’s round-up of new stone reaching the North American market.
Citadel Stone Continues Commitment to Premium Products
Trade feature in Stone World on our limestone and basalt range — yellow, white and fossil limestone and Ocean Reef shellstone — and the quarry-direct model behind it.
Media and editorial enquiries. We answer technical questions on limestone, basalt and shellstone — absorption and density, finishes, slip resistance, freight and import. Get in touch.