Description:
Origin: Quseir region / Eastern Desert, Egypt
Stone Type: Natural intrusive igneous rock (True Granite / Diorite variant)
Color Palette: Dark grey to intense black background featuring fine mineral speckling and a consistent, durable texture
Recommended Applications: High-traffic commercial and residential flooring, kitchen countertops, exterior building cladding, vanities, and monumental work
Common Finishes: Polished, Flamed, Honed, Brushed, and Bush-hammered
Technical Data
Technical specifications and physical property test results for Egyptian Black Quseir (Quser) Granite:
| Physical Property | Standard Test Method | Typical Specification Range / Value |
| Density (Bulk Specific Gravity) | ASTM C 97 | $2,700 – 2,770 \text{ kg/m}^3$ |
| Water Absorption (by weight) | ASTM C 97 | $0.10\% – 0.32\%$ |
| Compressive Strength | ASTM C 170 | $175 – 215 \text{ MPa}$ (~25,400 – 31,200 psi) |
| Flexural Strength | ASTM C 880 | $15 – 22 \text{ MPa}$ (~2,175 – 3,190 psi) |
| Abrasion Resistance | ASTM C 241 / C 1353 | $39 – 46 \text{ Ha}$ |
| Hardness | Mohs Scale | 6 – 7 |