About US
+29 Years of Expertise
KSM ONYX is a leading brand committed to bringing Iran’s rich natural stone resources to the world. At the core of our operations lies one of the most precious natural stones of Iran – onyx marble. Backed by decades of experience in the natural stone industry, KSM Group delivers international-standard solutions that combine aesthetic beauty and long-lasting durability for architects, designers, and builders worldwide.
Our Mission
To deliver the finest quality natural stones directly from quarries to your project — with no middlemen, full transparency, and a deep commitment to aesthetics, durability, and client satisfaction.Why Choose Us?
- Direct Import: No intermediaries – just premium quality, direct from the source.
- Certified Quality: Every slab is inspected and certified for strength and visual appeal.
- Expert Consultation: We support you in material selection and project planning.
- Fast Global Shipping: Efficient delivery across Turkey and worldwide.
- Custom Solutions: Cutting, polishing, and sizing tailored to your project's needs.
Our Warehouse & Showroom
Located in Sancaktepe, Istanbul, our warehouse showcases a wide selection of onyx and marble slabs available for wholesale, export, and special project-based orders. You are welcome to visit and handpick materials for your next masterpiece.Industries We Serve
- Luxury Residential & Villas
- Hotels & Hospitality
- Commercial Interiors & Offices
- Restaurants & Retail Stores
- Architectural Design Firms