Imperial Blue Marble

Imperial Blue Marble is a distinctive dark natural marble quarried in China, characterized by a deep, dark charcoal-grey to slate-blue and black background. It features a dense, directional, fibrous, and streaky grain structure, giving the stone a sophisticated and moody appearance.

Colour

The base colour ranges from deep charcoal-grey and smoky slate-blue to near-black. Subtle silvery-grey and whitish-grey accents provide depth without creating a highly contrasting appearance.

Texture & Pattern

Imperial Blue Marble has a dense, directional, fibrous and streaky crystalline texture. Its defining characteristic is a series of uniform, sweeping linear veins and fine diagonal, brushstroke-like markings in varying shades of grey and subtle silvery-white.

The Dark Imperial Blue variant presents a particularly deep and consistent smoky appearance, generally without bold contrasting coloured veins. The directional grain creates a flowing visual movement across slabs and makes bookmatching and vein-matching possible for selected blocks.

Its appearance is distinctly different from highly crystalline white stones with large blocky crystals and from fine-grained limestone with sandy granular speckling.

Physical & Mechanical Properties

• Water Absorption: 0.20–0.40 wt.%
• Density: 2,680–2,720 kg/m³
• Flexural Strength: 10–13 MPa
• Compressive Strength: 100–120 MPa
• Hardness: Mohs 3–4

Note: Values above are indicative ranges for database reference and are not certified quarry-specific test results.

Indicative Mineral Composition

Mineral Approx. Content (% by weight)

• Calcite: 85–95%
• Dolomite: 2–10%
• Quartz: 1–5%
• Micas / Amphiboles: 0–3%
• Other minerals and accessories: 0–3%

The mineral composition may vary between quarry locations and individual blocks.

Indicative Chemical Composition

Chemical Component, Approx. Content (% by weight)

• CaCO₃: 85–95%
• MgCO₃: 2–10%
• SiO₂: 1–5%
• Al₂O₃: 0.1–2%
• Fe₂O₃: 0.1–2%
• Other oxides: Trace–2%

These figures are indicative only and should be confirmed through an official laboratory analysis of the specific quarry material.

Recommended Applications

Imperial Blue Marble is suitable for a wide range of interior and selected exterior architectural applications, including:

Interior flooring, Wall cladding, Feature walls, Hotel and commercial interiors, Reception desks, Vanity tops, Bathroom surfaces, Kitchen countertops with appropriate care, Fireplace surrounds, Staircases, Columns, Decorative panels, Furniture and tabletops, Luxury interior design, Monumental and decorative applications,

For exterior applications, suitability should be evaluated according to local climate, freeze-thaw conditions, water absorption, thickness, anchoring system, and finish.

Maintenance

Imperial Blue Marble should be cleaned regularly with a soft cloth or mop and a pH-neutral stone cleaner.

Avoid:

• Vinegar
• Lemon and other acidic substances
• Strong acids
• Abrasive powders
• Harsh alkaline cleaners
• Aggressive chemical cleaners

A suitable penetrating sealer is recommended for countertops, vanities, floors, and other areas exposed to staining or moisture. Spills should be cleaned promptly, particularly acidic or strongly coloured substances.

Important Characteristics

• Deep charcoal-grey to slate-blue/black background
• Dense directional and fibrous grain
• Fine linear and diagonal brushstroke-like markings
• Subtle grey and silvery-white accents
• Generally consistent, moody appearance
• Suitable for bookmatching where block structure permits
• Natural variation between blocks and slabs
• Requires standard marble care and maintenance