Vienna Grey Limestone

Vienna Grey Limestone is a natural limestone quarried in Kameno Pole, Vratsa, Bulgaria, featuring a warm neutral beige to light taupe/greyish-beige background with irregular clusters of lighter cream and off-white markings and a distinctive network of fine natural fissures.

Colour and Appearance

• Base Colour: Warm beige, light taupe, greyish beige
• Secondary Colours: Cream, off-white, subtle light grey
• Overall Appearance: Warm, neutral, earthy, organic

Texture

Vienna Grey Limestone has a fine to medium-grained, compact limestone texture with subtle natural tonal variation. Its surface can be highly polished to produce a glossy appearance that reflects light and emphasizes the stone's natural colour and markings.

Pattern and Details

The surface features irregular, patchy clusters of cream and off-white markings distributed throughout the slab. Fine, delicate linear cracks and natural fissures may run horizontally and vertically across the surface, contributing to its organic and weathered character. These natural features can vary from slab to slab.

Physical and Mechanical Properties

• Water Absorption: 2.55–3.66 wt.%
• Density: 2,670–2,700 kg/m³
• Compressive Strength: 79.58–82.50 MPa
• Mohs Hardness: Approximately 3–4

The water absorption, density, and compressive strength values above are based on the provided data. Hardness is an indicative range for limestone and should be confirmed by quarry-specific testing.

Indicative Mineral Composition

Approximate % by weight; quarry-specific laboratory analysis should be used for certification.

• Calcite: 80–95%
• Dolomite: 2–12%
• Quartz: 1–5%
• Clay minerals: 0.5–5%
• Iron oxides and other accessory minerals: 0–3%

Indicative Chemical Composition

Approximate % by weight.

• CaCO₃: 80–95%
• MgCO₃: 2–12%
• SiO₂: 1–5%
• Al₂O₃: 0.2–2%
• Fe₂O₃: 0.1–2%
• Other oxides: trace–3%

Recommended Uses

Vienna Grey Limestone is suitable for a wide range of architectural and decorative applications, including:

Interior flooring, Wall cladding, Feature walls, Interior architectural panels, Hotel and hospitality projects, Residential interiors, Commercial interiors, Staircases and stair treads, Fireplace surrounds, Bathroom walls and floors, Vanity tops, Decorative stonework, Exterior wall cladding, subject to project-specific technical requirements, Landscaping and selected paving applications.

Because limestone is softer and generally more acid-sensitive than granite or quartzite, the intended application should be evaluated according to traffic, exposure, finish, and maintenance requirements.

Maintenance

Clean Vienna Grey Limestone regularly using a pH-neutral stone cleaner and a soft cloth, sponge, or mop. Avoid vinegar, lemon juice, acidic cleaners, abrasive powders, and aggressive chemicals, as acids can etch limestone surfaces. Sealing is recommended for flooring, bathrooms, vanity tops, and other areas exposed to moisture or staining substances. Wipe spills promptly, particularly oils, coffee, wine, and other staining liquids.

Important Note

Vienna Grey Limestone is a natural material, and colour, markings, fissures, density, porosity, and mechanical properties may vary between blocks and slabs. Buyers should request the actual slab photographs and a current quarry-specific technical data sheet before specifying the material for a large project.