If you have ever searched for a granite supplier’s catalogue, you must have already seen many words that are especially technical or not well known. Some examples of the technical terminology in the granite industry include honed finishes, gangsaw slabs, and porosity. While these terms are common to the industry, they are seldom explained in simple terms that allow easy understanding. However, knowing the meaning of these terms will help you make more informed decisions when sourcing granite for your kitchen countertop, flooring project, outdoor landscape, or large-scale commercial project.
As one of the reputable granite suppliers and manufacturers in India, Nakul International understands that every buyer should have clear information about what they are buying. Therefore, the complete glossary below is designed to help bring clarity and prevent all the confusion that is often created in the stone industry.
The List of Common Granite Industry Terms
Below is an easy-to-understand A to Z list of all the common granite industry terms and technical terminologies that every buyer needs to understand to ensure a smooth transaction and prevent all the confusion related to the granite stones.
A: Abrasive
An abrasive is any type of hard material that can be used to grind, cut, or polish granite. Some examples of common abrasives used in processing granite include aluminum oxide, silicon carbide, glass beads, and steel grit. Abrasives play an important role in sandblasting and surface texturing.
B: Book Matching
Book matching refers to a technique where two adjoining granite slabs are opened up like a book so that the natural vein of each stone runs parallel to each other, creating a mirrored effect across the two pieces of stone. Book matching is frequently utilized on dramatic feature walls and high-end countertop installations for an elegant and dramatic symmetrical appearance.
C: Cutter Slab
A granite cutter slab is a smaller piece of granite that is machined or cut in smaller sections, usually by gang saws or cut-to-size machinery. These smaller pieces may be used for tiles, cut to size and other specifications as needed for specific applications. Generally, cutter slabs are thinner than gang saw slabs and are well suited for situations requiring precise dimensional consistency.
D: Diamond Wire Saw
A diamond wire saw is a type of cutting tool that consists of a metal wire embedded with industrial diamonds. Diamond wire saws are typically used for extracting granite blocks from quarries and cutting large slabs of granite with very high precision. The diamond wire saw can produce a much cleaner cut and produces a significantly reduced amount of waste material than other types of cutting tools.
E: Etching
Engraving or Etching of text, images or decorative patterns into granite with either acid treatment or laser technology. This is used widely for making memorial stones, decorative architectural panels, etc. Etching refers to the process of engraving text, images, or decorative patterns onto the surface of granite using either acid treatment or laser technology. It is commonly used in memorial stones and decorative architectural panels.
F: Flamed Finish
A Flamed Finish occurs by applying an intense flame to Granite, which produces a rough, textured finish due to the bursting of the Surface Crystals. This finish is Slip Resistant, and therefore is advantageous for outdoor flooring, paving and pool surrounds.
G: Gangsaw Slab
Gangsaw slabs are slabs of granite that are cut in the gangsaw with multiple blades. Gangsaw slabs are generally 240cm long or longer and are the standard size for exporters. Nakul International supplies gangsaw slabs of different varieties of granite from India that meet all global project specifications.
H: Honed Finish
A honed finish is a finish that results in a smooth, matte finish or satin finish on granite, but is not as shiny as a polished surface. This is done by stopping the polishing process before reaching the last buff stage. Honed finishes can be found in bathrooms, flooring, etc.
I: Igneous Rock
Granite is actually an igneous rock, created from the cooling and solidification process of magma deep within the Earth’s crust. The origins of granite provide it with properties such as hardness, density and durability, which have contributed to granite being among the most popular natural stones available.
J: Jointing
The definition of jointing is the space left between two granite slab surfaces at the time of installation or attachment. The purpose of proper jointing is to allow for natural thermal expansion to maintain the structural integrity and to prevent cracking over time.
K: Keystone
A keystone is an architectural term for the topmost stone in an arch and is usually a wedge-shaped piece of granite. It locks all of the other stones in the same place by sharing the same and even weight distributed equally amongst all of the side stones. Both the aesthetic qualities of the keystone and its stability make it an important component in both traditional and modern buildings.
L: Leathered Finish
A leathered finish (also often referred to as a brushed finish) produces a low sheen and slightly textured surface on granite. This method produces a surface that is more resistant to fingerprints/water spots than the traditional method, as the process incorporates using diamond-tipped brushes on a honed slab. This style of granite finish is also extremely popular for kitchen or outdoor surfaces.
M: Mineral Composition
Three minerals make up the composition of granite: Quartz, Feldspar, and Mica. Quartz is highly responsible for giving the hardness, and feldspar for colour. Meanwhile, Mica provides some glimmer and sparkle, which can be seen in many varieties of granite.
N: Nominal Size
Granite tiles and slabs are given their nominal sizes and approximate dimensions for trades. However, the actual size may be slightly different than the nominal size sometimes. It is still highly recommended for purchasers to request the actual dimensions before confirming their orders.
O: Oxidation
Oxidation happens when the iron present in granite reacts with moisture and oxygen. This process often causes rust, stains or patches. Although oxidation will not affect the structural integrity of the granite, it can still affect the appearance of the granite. Applying a sealer on the granite surface regularly will help to prevent oxidation.
P: Porosity
Porosity refers to how much liquid a granite surface can absorb. A granite surface with low porosity will always be denser than a granite surface with high porosity and will be less likely to stain. When comparing the porosity of granite to marble, granite’s porosity is generally less. However, using a sealer is always recommended on granite surfaces.
Q: Quarrying
Quarrying is extracting raw blocks of granite from the ground using an array of tools, including blasting, drilling, and large machines. As one of the largest producers of granite in the world, India has many large granite deposit sites located in the states of Andhra Pradesh, Karnataka, Rajasthan, and Tamil Nadu.
R: Running Bond
Running bond is a widely preferred method to lay granite tiles. With this method of installation, the offset between each row is one-half of a tile from the row above or below it. This method provides good distribution of weight and creates an elegant look on the floor or wall.
S: Sandblasting
Sandblasting uses abrasive particles propelled at high speed against granite stones to create textures, patterns, or inscriptions on the surface. This process helps in producing rough and slip-resistant surfaces as well. This type of surface treatment is typically used with outdoor paving, memorial stones, and decorative panels.
T: Thermal Expansion
All stone expands and contracts due to changes in temperature. Therefore, understanding the process of thermal expansion is very important for every buyer. In order to provide room for this phenomenon, it is necessary to leave adequate space between each slab.
U: Underpinning
Underpinning supports the installation of granite flooring through proper structural systems directly under the slab’s surface. The purpose of having adequate underpinning is to create an even weight distribution for stability.
V: Veining
Veining is a natural phenomenon in which contrasting mineral lines or streaks appear within granite slabs, producing visually appealing patterns in some varieties of granite. Marble veining appears more prominently than that of granite, which often has beautiful veined patterns.
W: Waterjet Cutting
Water jet cutting is a high-pressure water jet with various abrasive particles that is used to cut granite into very decorative shapes or designs. Water jet cutting is ideal for custom-built countertops, mosaic work, and architectural details that need to be cut more accurately than could be done with a conventional saw.
X: Xenolith
Xenoliths refer to pieces of an older rock that have become trapped in granite as it cools down and turns hard. Moreover, xenoliths can have a dark or irregular appearance and can be a unique characteristic of granite stones.
Y: Yield
Yield in the granite industry means the amount of usable stone that comes from a quarried block of granite after preparation, cutting, and inspection for quality. The yield of a stone block must be maximized in order to help achieve the lowest possible overall production costs and produce the best value for the buyer.
Z: Zoning
Zoning refers to visible differences in colour, mineral density or pattern on a single granite slab, which can be used to determine how many slabs will fit with the buyer’s intended design. Zoning is a natural variation in stone, not a defect, and understanding how zoning works is important for buyers to ensure they are getting the right slabs for their designs.
Conclusion
For suppliers, it is highly important to learn these common granite industry terms, as it can make communication easier and help in evaluating product quality and planning projects with confidence. Understanding these terms can also ensure that you get exactly what your project demands.
Therefore, Nakul International, a reputable granite manufacturer, supplier and exporter, provides a complete glossary of common granite industry terms explained very simply above in the blog. Partner with our team today to understand your requirements precisely and explore a wide range of premium granite.
FAQs (Frequently Asked Questions):
1. What is a gangsaw slab in the granite industry?
A gangsaw slab is a large granite slab cut using multiple blades in a gangsaw machine. These slabs are commonly used for countertops, flooring, wall cladding, and export projects due to their standard dimensions.
2. What is the difference between a honed and a polished granite finish?
A polished finish has a glossy, reflective surface, while a honed finish offers a smooth, matte appearance with less shine. Honed granite is often preferred for flooring and bathrooms because of its subtle look.
3. Why is granite porosity important?
Granite with lower porosity absorbs less moisture, making it more resistant to stains and easier to maintain. Applying a quality sealer further enhances its durability and performance.
4. What types of granite products does Nakul International supply?
Nakul International supplies premium granite blocks, gangsaw slabs, cutter slabs, tiles, and custom cut-to-size products for residential, commercial, and export projects.
5. Why choose Nakul International as your granite supplier?
Nakul International combines extensive industry experience, strict quality standards, a diverse range of Indian granite, and reliable global export capabilities to meet projects of all sizes.
6. What should buyers know before purchasing granite?
Buyers should understand key factors such as finish type, slab size, porosity, mineral composition, and intended application to ensure they select the most suitable granite for their project.