1 / Coral: a type of semi-precious stone, high hardness, large energy, luminous, refractive and very glossy, hardness after diamond. Jade sculptures become beautiful works used for garden space (decoration, signage, tongue). This semiprecious stone has the meaning of feng shui brings health, the luck of the owner and especially suitable for sacred works. The rare ruby in the world, fortunately in some natural mines in Quy Hop, Nghe An.
2 / Marble
Marble is a metamorphic stone from limestone, with non-fragmentary structure. Its main constituent is calcite (crystalline form of calcium carbonate, CaCO3).
Marble is a metamorphic rock found in the mountainous regions of most countries in the world. This is a sedimentary rock, in the world for a long time people have known and used this material, especially the Buddhist country. Marble is available in many colors such as white, yellow, pink … This material is suitable for sculpture, especially this stone has very healthy and healthful lithological composition (no oxides such as granite ).
When used as feng shui stone, we can let nature (suitable for garden), sell carved (suitable for port, sign, logo of luxury works, …) or carved (Statue, statue animals, stone statues, fountains, small landscape …).
In terms of stiffness, marble is often not as hard as granite, but in return, marble is naturally vivid and brighter than any other stone. Marble is more porous, soft and water-repellent than granite. Therefore, must be waterproof if used for exterior and wet locations. Also difficult to work because it is very fragile, difficult to find products similar to the construction price is higher than Granite. However, because of luxurious beauty, cold color but elegant stone will bring the owner relaxed, cool, luxurious. Marble is usually priced higher than Granite. Because of its beauty and elegance, marble is a popular choice for desks, floors, walls, kitchens, handrails, entry halls and sculptures.
3 / Granite stone
Also known as marble, it is a natural stone formed by the metamorphism of limestone, carbonate or dolomite. The metamorphic process of re-crystallization of these sedimentary rocks into intercalated rock strata.
Due to the crystalline structure, granite has high hardness, waterproof, can be paved in the position of scratch, abrasion such as stairs, floors, facades … Usually because the price is lower marble, easy to Due to less fracture, granite stones are generally used widely. Vietnam is famous for its quarries in the central region. The climate here is hot so the granite here has mechanical strength, color is very high even with buildings in the sun and wind. Compared with other types of granite in other countries, typically China, the quality of the hardness, durability and the world appreciated.
There are some granite in the Vietnam market: Black Kim Sa (India), Brazil Red (India), British Brown (India), Xa Cu (Norway), Hue Black Purple Mongolia (China), White Suoi lau (Vietnam), Black Phu Yen (VN), Red Binh Dinh (VN).
Marble and Granite is a widely used stone in the construction industry. The advantage of these two materials is the elegant, airy, cool style gives the owner of the house a great harmony between classical and modern style. In addition, marble – Granite also has high strength and durability. The thickness of the stone allows the floor to withstand a strong impact.
Statistics from various sources indicate that granite mining in China, India and Brazil accounts for about two thirds of the granite used worldwide. There are granite quarries operating in dozens of countries, and it is one of the most popular natural stones on the market. The new granite resources continue to be located and developed around the world.
Granite has long been used as a pavement and outside material, and its inherent strength, grinding resistance and high weather resistance are likely to keep it one of the raw options. Superiority for today’s architects. Granite has also been used as a traditional material for the roadside, city, where its strength and durability have been documented with decades of vehicular abuse.
Some synthetic surfaces are scratched easily, while the hardness of the mineral includes most of the excess granite that the instruments used on them, resulting in excellent scratch resistance. Granites often heat up to temperatures of ± 250 ° C (± 480 ° F), although direct application of local heat sources is not recommended, as strong heat gradients within the stone can start to crack. Studies on bacteria stored on the surface of the common stall have proven that granite is better than most surfaces used for that purpose. (Reference: MIA B)
The absorption rate (% water, by weight) of rocks within this group ranges from 0.05% to 0.40%, indicating that the available pores volume is capable of picking up an agent. very light dye. Antiperspirants are sometimes used to further reduce the stain resistance of these materials.
In addition to the rocks on the other a number of other rocks are also used in construction such as sandstone lines, jade jade … but the market in Vietnam is not prevalent.
3) Marble, Onyx, & Serpentine
Ideal for halls, bathrooms, floors and ovens
Brain code is often confused with marble, but it is a remarkably different stone. Onyx is a sedimentary rock, formed as stalactites and stalagmites in interior cave. The result of this methodology is the cryptocrystalline construction of stone architecture, and it is the size and homogeneity of the crystals that contribute to the classic dimple properties of most agate varieties. While susceptible to chemical attack and abrasion, decorative accents of agate are probably superior to any other material. .
4 / Sandstone and Quartzite
Discover the “quartz-based” sandstone. Terms used for sand sized (0.06-2.0 mm) clasts are welded together by other agents. So sandstone can be of any mineral, but the vast majority of sand in the market is quartz-based.
The durability and performance of sandstone is not as much affected by the size of sand grains, as it is influenced by cement dealers attaching the particles together. Many sandstone types are used in blocks such as thresholds, counters, groundwater tables and other exterior features. Exterior panels are also a popular application, although many of these stones are often used in thicker sections than other types of rocks due to their lower bending strength. While sandstone has been used in both counters and shower liners for applications, the varieties that are suitable for installation are limited.
Quartz is a metamorphic stone formed from sandstone. Quartz can have special strength, density, and hardness. The strength, wear resistance, and weather durability of this stone extend its applicability to include any of the most popular applications for natural stone dimensions.
5 / Travertine, limestone, limestone and dolomite
Red, red, and indoors
The limestone quarry exists in all continents on earth. Although popular and traditional references to “marble travertine”, travertine is actually a kind of limestone.
In their soft earthy tones, the incorporation of stones into their designs offers great flexibility in choosing free colors for other interior elements.
Many types of materials have both enjoyed a successful history of external applications, and some of the most prominent government and financial institutions around the world boast displays such as lime stone outside of they. Despite the prevalence of external limestone applications, the number of limestone varieties with successful histories in outdoor open applications, especially in freezing / thawing environments, is relatively limited. processing.
Since the stones are some of the more soft than natural stone materials, they have long been a popular choice for complex carving and molding features, as well as statuary.
A form of limestone exists, which is dolomite. Dolomite is based on the double carbonate of calcium carbonate magnesium, and its properties are influenced by the difference in composition. Dolomites generally have higher densities, lower absorptions, stronger compression and higher bending, and higher abrasion resistance than calcium based calcium limestone. The real estate differences provide some options for dolomite applications where other limestone varieties are either marginal or inconsistent.
