A Legacy of Quality Since 1937
Wonderstone is a wholly owned subsidiary of Assore Ltd and has been mining one of the world’s purest natural pyrophyllite deposits since 1937.
Located near Ottosdal in South Africa’s North West Province, our operation combines decades of mining expertise with continuous research and development to produce high-performance natural and engineered pyrophyllite products.
Our materials are trusted by manufacturers throughout South Africa and internationally where product consistency, thermal stability and machining performance are essential.
1937
Mining Since
ISO 9001
Quality Management
ISO 14001
Environmental Management
From Quarry to Finished Product
Wonderstone controls every stage of production to ensure consistent quality and reliable performance.
1. Mining
Our uniquely pure pyrophyllite deposit is carefully mined from our own operation near Ottosdal.
2. Processing
Raw material is crushed, sorted and processed according to strict production requirements.
3. Material Preparation
Material is prepared as natural stone, powders or reconstituted products depending on customer requirements.
4. Precision Manufacturing
Products are supplied as: Natural Rock, Engineered Powders, Machined Components, Rods, Blocks, Custom Shapes
5. Quality Assurance
Every stage is monitored to maintain consistent material properties and product performance.
Built Around International Standards
Wonderstone operates certified management systems that support consistent manufacturing and responsible environmental practices.
ISO 9001:2015
Certified Quality Management System
Scope includes: Quarrying Processing Manufacturing Supply of Wonderstone and related products
Valid until March 2028.
ISO 14001:2015
Certified Environmental Management System
Supporting environmentally responsible mining and manufacturing practices.
Valid until March 2028.
Why Manufacturers Choose Wonderstone
Exceptional Material Consistency
A naturally pure pyrophyllite deposit provides reliable material characteristics.
Excellent Thermal Stability
Suitable for demanding high-temperature industrial applications.
Low Thermal Expansion
Maintains dimensional stability during heating.
Green State Machinability
Allows complex shapes to be machined efficiently before firing.
High Purity
Suitable for demanding Technical Ceramic and HPHT applications.
Continuous Research & Development
Wonderstone continually develops new products and manufacturing capabilities.
Designed for Demanding Industries
Technical Performance
Wonderstone products offer properties suited to demanding industrial applications, including:
- Excellent thermal shock resistance
- Low thermal expansion
- High compressive strength
- Excellent electrical insulation
- Chemical resistance
- Stable performance at elevated temperatures
- Consistent density
- Excellent machinability
For complete material specifications, download the Technical Datasheet
Our Commitment
At Wonderstone, manufacturing excellence extends beyond producing quality materials.
Our commitment includes consistent product quality, continuous improvement, responsible environmental management, technical expertise, long-term customer partnerships and reliable supply
Supported by internationally recognised ISO-certified management systems and decades of industry experience, we continue to supply engineered mineral solutions to customers around the world
