Giallita Granite

Giallita Granite is a distinctive natural stone quarried in Brazil, characterized by its light yellow to golden-beige color with fine dark grey and black speckles. The slight tonal variations lend it a warm and natural “salt-and-pepper” appearance. With a medium-grained crystalline structure composed mainly of quartz, feldspar, and mica, this granite is highly durable and suitable for various applications, especially large surfaces due to its consistent and understated look.

Physical and Mechanical Properties

• Water Absorption: Low (Typically around 0.2% to 0.4%)
• Density: Approximately 2,660 to 2,720 kg/m³
• Flexural Strength: ~12.5 to 15 MPa
• Compressive Strength: ~128 to 140 MPa
• Hardness: Typically 6 to 7 on the Mohs scale
• Porosity: Low (~0.3% to 0.75%)
• Slip Resistance: High when properly finished, with a coefficient of friction usually above 0.6

Chemical and Mineral Compositions (Typically in Percentages by Weight)

• Quartz: ~25% to 35%
• Feldspar: ~50% to 60% (which includes potassium feldspar and plagioclase)
• Mica: ~5% to 10% (including biotite and muscovite)
• Other Minerals: Trace amounts of zircon, apatite, magnetite, etc.
• Silicon Dioxide (SiO2): ~65% to 75%
• Aluminum Oxide (Al2O3): ~13% to 17%
• Potassium Oxide (K2O) and Sodium Oxide (Na2O): ~5% to 10%
• Iron Oxide (Fe2O3): ~3% to 5%
• Calcium Oxide (CaO): < 2%

Usage

• Countertops: Popular for kitchen and bathroom countertops due to its durability and aesthetic appeal.
• Flooring: Suitable for high-traffic areas given its strength and slip-resistant nature.
• Wall Cladding: Ideal for both interior and exterior cladding for a sophisticated look.
• Monuments and Statuary: Occasionally used in monument construction due to its workability and durability.
• Landscaping: Used for decorative elements in garden and landscape design.

Maintenance

• Cleaning: Regular cleaning with mild, non-acidic cleaners to prevent etching and staining.
• Sealing: Recommended to seal annually to enhance resistance to moisture and stains.
• Polishing: Periodic polishing to maintain its shine and luster, especially for high-use surfaces like countertops.

Cutting Sizes

• Standard Slabs: Typically available in sizes ranging from 240 cm x 120 cm up to 300 cm x 180 cm with a thickness of 2 cm or 3 cm.
• Tiles: Common sizes include 30 cm x 30 cm, 60 cm x 60 cm, and 30 cm x 60 cm, among others, depending on project needs.

Common Surface Finish Options

• Polished: Offers a high-gloss, reflective surface that enhances the stone's color.
• Honed: Smooth with a matte or satin finish, reducing the shine for a more subdued look.
• Leathered: Textured tactile finish that adds character while maintaining color vibrancy.
• Flamed: Rough, textured finish ideal for exterior applications or areas requiring extra slip resistance.

Giallita Granite's ability to blend durability with aesthetic versatility makes it a desirable choice for various architectural and interior design projects.