Amazon Reef Quartzite

Amazon Reef Quartzite is a highly sought-after exotic natural stone quarried in Brazil, admired for its dramatic flowing movement and rich earthy color palette. It features vibrant emerald green and soft sage tones blended with warm rust, copper, brown, and occasional golden highlights, intersected by crystalline gray and white quartz veins. The stone's dynamic appearance resembles flowing reefs, river currents, or natural landscapes, making every slab unique. Formed through intense metamorphism, Amazon Reef Quartzite offers the luxurious appearance of marble while delivering the superior durability and hardness of quartzite.

Color & Appearance

• Emerald green background
• Soft sage and olive green shades
• Warm rust, copper, brown, and earthy tones
• Crystal gray and translucent white quartz veins
• Occasional golden mineral highlights
• High natural color variation
• Excellent depth and visual movement

Texture & Structure

• Medium- to coarse-grained crystalline texture
• Strong metamorphic quartzite structure
• Flowing, wave-like veining Interlocking quartz crystals
• Dense and compact composition
• Naturally polished appearance with excellent gloss retention

Mineral Composition (% by Weight)

• Quartz: 92–97%
• Feldspar: 1–3%
• Muscovite: 0.5–2%
• Biotite: 0.3–1.5%
• Chlorite: 0.2–1%
• Iron Oxides: 0.2–1%
• Garnet and accessory minerals: <1%

Chemical Composition (% by Weight)

• SiO₂: 94–97%
• Al₂O₃: 1.0–2.5%
• Fe₂O₃: 0.3–1.2%
• K₂O: 0.2–1.0%
• Na₂O: 0.1–0.6%
• MgO: 0.1–0.5%
• CaO: 0.05–0.4%
• TiO₂: <0.2%
• Loss on Ignition (LOI): <0.5%

Physical & Mechanical Properties

• Bulk Density: 2,650–2,720 kg/m³
• Water Absorption: 0.10–0.30%
• Apparent Porosity: 0.3–0.8%
• Compressive Strength: 190–250 MPa
• Flexural Strength: 18–28 MPa
• Tensile Strength: 12–18 MPa
• Abrasion Resistance: Very High
• Frost Resistance: Excellent
• Mohs Hardness: 7–7.5
• Modulus of Rupture: 18–25 MPa
• Modulus of Elasticity: 65–80 GPa
• Slip Resistance (Honed): High
• Slip Resistance (Flamed): Very High

Test Results

• Water Absorption: 0.18%
• Compressive Strength: 220 MPa
• Flexural Strength: 22 MPa
• Apparent Porosity: 0.45%
• Bulk Density: 2,680 kg/m³
• Abrasion Resistance: Excellent
• Frost Resistance: Passed
• Freeze-Thaw Cycles: No visible deterioration

Applications

• Kitchen countertops
• Kitchen islands
• Bathroom vanity tops
• Shower walls
• Feature walls
• Fireplace surrounds
• Interior wall cladding
• Exterior wall cladding
• Flooring
• Staircases
• Window sills
• Reception desks
• Dining tables
• Bar tops
• Outdoor kitchens
• Luxury commercial projects
• Hotel interiors
• High-end residential projects

Advantages

• Exceptional hardness
• Excellent scratch resistance
• Superior heat resistance
• Very low water absorption
• Outstanding stain resistance when sealed
• Excellent weather resistance
• UV stable for exterior applications
• Distinctive exotic appearance
• Every slab is unique
• Long service life
• Suitable for both interior and exterior use

Maintenance

• Seal upon installation using a premium penetrating stone sealer.
• Reapply sealer every 2–5 years depending on use and exposure.
• Clean regularly with a pH-neutral natural stone cleaner.
• Avoid acidic or highly alkaline cleaners.
• Wipe spills promptly, especially oils, wine, coffee, and citrus juices.
• Use cutting boards and trivets to preserve the polished finish.
• Dust mop or damp mop flooring regularly.
• Avoid abrasive cleaning pads or harsh chemicals.
• Periodically inspect exterior installations and reseal when necessary.
• With proper care, Amazon Reef Quartzite retains its natural beauty and structural integrity for decades.