Green River Marble

Green River Marble is a distinctive natural stone quarried in Angola, recognized for its elegant jade-green background enriched with flowing white and soft gray veining. The stone also exhibits a subtle natural glitter effect caused by its high quartz content, giving the surface a refined crystalline sparkle under light. Its aesthetic combines freshness, depth, and luxury, making it highly suitable for premium architectural and decorative applications.

Texture & Structure

Green River Marble has a medium-grained crystalline marble structure with a relatively high quartz presence compared to typical calcitic marbles. This enhances its hardness and gives it a slightly granular, reflective texture.

• Texture: Medium crystalline, slightly granular
• Structure: Calcite–quartz intergrowth with minor silicate inclusions
• Surface character: Smooth with natural reflective sparkle
• Density and compactness: Medium to high compact structure

Pattern & Appearance

• Base color: Jade green
• Veining: White and light gray flowing veins
• Effect: Subtle natural glitter due to quartz crystals
• Pattern type: Linear to wave-like natural movement
• Visual impression: Fresh, elegant, semi-luxury appearance

Each slab shows natural variation in veining intensity and crystal distribution.

Physical & Mechanical Test Results

• Density:2,680 – 2,720 kg/m³
• Water Absorption:0.25 – 0.45%
• Compressive Strength:120 – 160 MPa
• Flexural Strength:11 – 14 MPa
• Abrasion Resistance:Medium
• Frost Resistance:Good
• Hardness (Mohs):3 – 4 (marble with quartz enhancement)

Chemical Composition (% by Weight)

• CaCO₃ (Calcium Carbonate):75 – 88%
• SiO₂ (Silicon Dioxide):8 – 15%
• MgCO₃ (Magnesium Carbonate):1 – 3%
• Fe₂O₃ (Iron Oxide):0.3 – 1.5%
• Al₂O₃ (Aluminum Oxide):0.5 – 2%
• Other trace minerals:<1%

Mineral Composition (% by Weight)

• Calcite:70 – 85%
• Quartz:8 – 15%
• Dolomite:2 – 5%
• Serpentine / Green silicates:2 – 6%
• Accessory minerals:1 – 3%

Available Finishes

Polished, Honed, Leathered, Brushed, Sandblasted, Tumbled, Waterjet cut, Machine-cut

Applications

Interior Applications

• Luxury flooring
• Wall cladding
• Feature walls
• Bathroom walls
• Vanity tops
• Fireplace surrounds
• Decorative panels

Commercial Applications

• Hotel lobbies
• High-end retail spaces
• Corporate interiors
• Reception areas
• Luxury residential projects

Exterior (Limited Use)

• Covered façade cladding
• Decorative architectural features
• Vertical wall installations

Maintenance Guidelines

• Clean with pH-neutral stone cleaner only
• Avoid acidic substances (vinegar, lemon, etc.)
• Regular sealing recommended due to marble nature
• Use soft cloth or mop for cleaning
• Avoid abrasive pads or harsh chemicals
• Wipe spills immediately to prevent etching
• Reseal every 1–2 years depending on usage

Green River Marble is a premium jade-green natural stone characterized by elegant white-gray veining and a subtle crystalline sparkle from its quartz-rich composition. Its balanced aesthetics and moderate strength make it ideal for luxury interior applications and decorative architectural surfaces requiring a distinctive natural green marble appearance.