Stone Knowledge
In 2026, multiple mandatory national standards and industry norms for natural stone will be implemented, covering all 9 types of decorative stone materials including marble, granite, limestone, limestone, sandstone, slate, agate, quartzite, and dolomite.
04
2022
/
01
The new national standard for stone classification officially distinguishes between dolomite and marble, clarifying that dolomite is a metamorphic sedimentary rock of calcium magnesium carbonate and is no longer classified as marble.
09
2022
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01
The new national standard for natural stone categorizes quartzite separately, clarifying its quartz metamorphic rock properties and comprehensive performance levels. Quartzite has a quartz content of over 90%, a Mohs hardness of 6.5~7, a warm and delicate appearance similar to marble, and a hardness and durability performance close to granite. It perfectly combines the advantages of both and is currently the most cost-effective mid to high end natural decorative stone.
08
2022
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02
The new national standard for high-end decorative stone has added a special classification and technical indicators for agate, officially including agate in the management category of quartz gemstone grade decorative stone.
19
2023
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02
The new version of the "Technical Requirements for Decorative Applications of Natural Slate" has been officially released, which makes mandatory provisions on the cleavage structure, anti slip grade, and outdoor weather resistance indicators of slate. Slate belongs to low-grade metamorphic mudstone, with complete natural plate-like cleavage, which can be easily cleaved into flat thin sheets along the bedding plane.
06
2023
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05
Recently, the national market for antique architecture, cultural tourism landscapes, and Chinese style decoration has continued to expand. Sandstone, as a natural detrital sedimentary art stone, has seen a simultaneous increase in market attention and demand.
29
2023
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12
The national building materials standardization department has updated the technical guidelines for the application of limestone decoration, and made new unified requirements for the treatment of cave and stone holes, protective construction, installation and reinforcement.
07
2025
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03
The new version of the "Application Technical Specification for Decorative Limestone" has been officially released and implemented, providing comprehensive and unified regulations on limestone classification, performance indicators, construction protection, and applicable scenarios.
07
2025
/
03
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Email: davidkuo@mablestoneworld.com
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