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Uno Grey Granite

Uno Grey GraniteUno Grey Granite
Uno Grey Granite

Grey - Granite

India

About

Item Details

Material Type:
Granite
Origin:
India
Primary Color(s):
Grey
Recommended Usage:
kitchen and bathroom countertop, wash basins, building stone, ornamental stone, stairs, interior, exterior wall and floor applications, mosaic, water-jet pattern, wall panels, table tops, balustrades, columns, wall and pool copings, pool pavers, fireplaces, window sills
Additional Names:
Uno Gray Granite
Finished Surface:
Polished,Flamed,Bush Hammered,Tumbled,Brushed,Split,Machine Cut,Natural Surface,Sandblasted,Acid Washing,Combed,Water Jet,Chiseled,Pickling

Testing

Water Absorption:
0.20 - 0.30%
Density:
2690 - 2720 kg/m³
Flexural Strength:
13 - 15 MPa
Compressive Strength:
150 - 180 MPa

Description

Uno Grey Granite features a deep charcoal grey to dark grey background, strongly contrasted by prominent off-white, cream, and light grey mineral speckles. Subtle dark green and black undertones are visible within the matrix, creating a bold, naturally textured appearance. Its overall aesthetic is robust, balanced, and contemporary.

Texture & Structure

Coarse-grained crystalline granular texture with a dense, compact, and interlocking mineral structure. The surface consists of clearly visible angular mineral grains, forming a distinctive salt-and-pepper appearance. Its coarse crystal distribution gives the stone a strong natural character and visual depth.

Pattern & Veining

Characterized by a relatively uniform distribution of contrasting light-colored mineral crystals across a dark grey background. Irregular clusters of white, cream, and grey grains create a pronounced speckled pattern rather than continuous linear veining. Natural variations in grain size, density, and mineral distribution may occur between slabs and blocks.

Technical Characteristics & Test Results

Indicative reference values for comparable Indian grey granites. Actual test results depend on the quarry and production batch.

Property

Indicative Value

Water absorption

0.20–0.30%

Apparent porosity

0.2–1.0%

Bulk density

2,690–2,720 kg/m³

Compressive strength

150–180 MPa

Flexural strength

13–15 MPa

Abrasion resistance

15–25 mm

Mohs hardness

6–7

Chemical & Mineralogical Composition

Indicative mineralogical composition by weight:

Mineral

Approx. Content

Quartz

25–35%

Plagioclase Feldspar

25–35%

Potassium Feldspar

15–25%

Biotite

5–10%

Amphibole

2–8%

Other accessory minerals

1–5%

Indicative chemical composition by weight:

Chemical Component

Approx. Content

SiO₂

65–72%

Al₂O₃

13–16%

K₂O

3–5%

Na₂O

3–5%

CaO

1–4%

Fe₂O₃

1–4%

MgO

0.5–2%

TiO₂

0.1–1%

Other oxides

0.1–2%

Usage

Suitable for kitchen countertops, bathroom vanity tops, flooring, wall cladding, staircases, window sills, fireplace surrounds, exterior paving, building facades, landscaping, and commercial architectural applications. Its dark grey background and contrasting crystalline speckles make it particularly suitable for modern residential and commercial projects.

Maintenance

Clean regularly using a pH-neutral stone cleaner and a soft cloth or mop. Avoid acidic cleaners, abrasive chemicals, and harsh detergents. Apply a suitable penetrating stone sealer to help reduce staining and moisture absorption. Wipe spills promptly, especially oils and strongly colored liquids. For outdoor installations, periodic inspection of joints and surface conditions is recommended.

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