Travertine is a type of limestone deposited by mineral springs, especially hot springs. Travertine usually has a fibrous or concentric look and exists in white, tan, and cream-coloured varieties. It is created by a process of rapid precipitation of calcium carbonate, which is usually at the mouth of a hot spring or in a limestone cave. In the case of a hot spring, it can form stalactites, stalagmites, and other speleothems. It is often used in Italy and elsewhere as a building material.
Travertine is a terrestrial sedimentary rock, formed by the precipitation of carbonate minerals from solution in ground and surface waters, or/and geothermally heated hot-springs. Similar (but softer and extremely porous) deposits formed from ambient-temperature water is called tufa.
Some springs have temperatures high enough to exclude macrophytes and bryophytes from the deposits. As a consequence, deposits are, in general, less absorbent than tufa.
Travertine is often used as a building material. The Romans mined deposits of travertine for building temples, aqueducts, monuments, bath complexes, and amphitheaters such as the very famous and fascinating Colosseum, the largest building in the world constructed mostly of travertine.
Other noteworthy buildings using travertine extensively include the Sacré-Cœur Basilica located in Paris and the 20th-century Getty Center in Los Angeles, California, as well as the Shell-Haus in Berlin. The travertine used in the Getty Center and Shell-Haus constructions was imported from Guidonia and Tivoli.
Granite is a common and widely occurring type of intrusive, felsic, igneous rock. Granite often has a medium- to coarse-grained texture. On occassion some individual crystals which are called phenocrysts, are larger than the groundmass, in which case the texture is known as porphyritic. A granitic rock with a porphyritic texture is sometimes known as a porphyry. Granite can be pink to grey in colour, depending on their chemistry and mineralogy. Granite can be defined as an igneous rock with at least 20% quartz by volume. Granite is different from granodiorite as it has at least 35% of the feldspar in granite is alkali feldsparas opposed to plagioclase. It is the alkali feldspar that gives many types of granite a distinctive pinkish colour. Outcrops of granite tend to form tors and roundedmassifs. Granite sometimes are formed in circular depressions surrounded by a range of hills, formed by the metamorphic aureole or hornfels. It is usually found in the continental plates of the Earth's crust.
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Established in 1993, RMS Natural Stone & Ceramics Pty Ltd has grown to become one of Australia’s leading importers and sellers of Natural Stone and Ceramics. RMS prides itself on providing the highest quality stone and ceramic products to various projects around Australia and New Zealand. With showrooms and warehouses in Sydney, Melbourne, Brisbane and Perth, we ensure we only have products sourced from quality quarries from Italy, Spain and select other countries.