Star Gray Marble

Quarry Location: Sivas Province, Central Anatolia, Turkey

Stone Type: Metamorphic Marble

Visual Description:

• Base Color: Ash gray to steel gray
• Pattern: Scattered large to medium-sized black and white pebbles, along with light and dark gray speckles
• Unique Feature: Contrasting aggregate-style composition that gives the marble a "terrazzo-like" or cosmic starfield aesthetic
• Texture: Smooth to coarse depending on finish; depth enhanced by contrasting embedded clasts
• Visual Impact: Eye-catching yet balanced — ideal for creating visual texture and sophisticated ambiance

Technical Properties & Test Results

• Bulk Density .... 2.68 – 2.71 g/cm³
• Water Absorption .... 0.15% – 0.25%
• Compressive Strength .... 105 – 118 MPa
• Flexural Strength .... 12 – 15 MPa
• Abrasion Resistance .... 17 – 22 mm
• Mohs Hardness .... 3 – 3.5 (suitable for both wall and floor use)
• Slip Resistance (Honed/Leathered) .... R10 – R11 (DIN standard)

Chemical Composition (% by weight)

• CaCO3 (Calcium Carbonate) .... 93 – 95%
• MgCO3 (Magnesium Carbonate) .... 1.0 – 1.5%
• SiO2 (Silica) .... 1.2 – 2.0%
• Fe2O3 (Iron Oxide) .... 0.3 – 0.6%
• Al2O3 (Aluminum Oxide) .... 0.3 – 0.5%

Mineral Composition

• Calcite .... 90–94%
• Dolomite .... 2–4%
• Quartz .... 1–2%
• Dark inclusions .... Carbonaceous and iron-based materials in black clasts
• White clasts .... Crystalline calcite & light feldspathic grains

Surface Finish Options

Polished .... High-gloss surface reveals depth of clasts and contrast

Honed .... Matte finish, softens pattern but retains elegance

Leathered .... Textured matte finish, tactile and organic

Sawn Cut .... Unfinished raw look, industrial chic

Tumbled .... Antiqued, worn look — suitable for rustic spaces

Sandblasted/Brushed .... For exterior anti-slip use with natural texture

Available Sizes (cm / inch)

Tiles:

• 30×30 cm (12"×12")
• 60×60 cm (24"×24")
• 30×60 cm (12"×24")
• 40×80 cm (16"×32")
• Custom cuts available for projects

Slabs:

• Standard thickness: 2 cm and 3 cm (3/4" and 1 1/4")
• Slab sizes: up to 280×160 cm (110"×63") depending on block quality

Recommended Applications

• Luxury residential flooring and wall cladding
• Feature walls, hotel lobbies, reception desks
• Bathroom vanities and shower walls
• Fireplace surrounds and staircases
• Outdoor use in dry climates with honed, flamed, or sandblasted finish

Maintenance Guidelines

• Regular cleaning with pH-neutral stone cleaner
• Seal with impregnating marble sealer after installation
• Avoid acidic or abrasive cleaners
• Re-seal annually in high-traffic areas or wet zones
• Buff polished surfaces regularly to maintain sheen