Description
(O1215) Blue Onyx is a dense type of limestone formed from layered sedimentary deposits of hot springs. Its distinctive blue colour and high clarity make it a standout material in luxury spaces.
Physical and Chemical Characteristics
| Feature | Description & Values |
| Colour & Pattern | A mesmerising blue base with varied veining, often influenced by the presence of coal and manganese |
| Texture | Crystalline and semi-translucent, allowing for light transmission |
| Strength | Moderate compressive strength and hardness; more sensitive to scratches and impacts than harder stones |
| Water Absorption | Moderate; requires sealing and care to prevent staining in damp environments |
| Polishability | Excellent; achieves a bright, glossy and refined surface |
| Density | Medium; natural porosity requires proper sealing and maintenance |




Applications
Interior Spaces
- Wall Cladding: Ideal for decorative interior walls in lobbies, lounges, and luxury living areas
- Flooring: Suitable for low-traffic areas; special care needed to avoid scratching and wear
- Countertops & Cabinet Surfaces: A premium option for luxury kitchens and bathrooms
- Fireplaces & Decorative Frames: Perfect for backlit installations due to its translucency

Exterior Spaces
- Building Façades: Rarely used due to its sensitivity to weather conditions and direct sunlight
- Bookmatch & Fourmatch Panels: Ideal for symmetrical visual effects in high-end interiors
Advantages
- Captivating visual appeal with unique blue hues
- Translucent quality allows for backlighting and dramatic lighting effects
- Excellent surface polishability, yielding a glossy, refined finish
Disadvantages
- Susceptible to scratching and impact damage; requires careful handling and maintenance
- Moderate water absorption; prone to staining without proper sealing
- High cost due to rarity and intricate processing requirements
Important Notes
- In high-traffic areas, regular maintenance and care are crucial
- Due to its light-transmitting properties, it can be paired with backlighting to enhance its visual impact
Technical Specifications
| Property | Value |
| Specific Gravity (g/cm³) | 2.6 – 2.8 |
| Compressive Strength (MPa) | 80 – 120 |
| Water Absorption (%) | 0.2 – 0.8 |
| Porosity (%) | 0.5 – 1.5 |

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