When it comes to precision cutting in the tiling and construction industry, choosing the right blade is just as important as choosing the right tool. RUBI, one of the most trusted names in cutting solutions, simplifies this process with a clear, colour-coded system for their wet and dry diamond blades. Each colour represents a blade engineered for optimal performance on specific materials—saving tradespeople time, reducing wear, and ensuring clean, accurate results.
Whether you’re cutting porcelain, ceramics, slate, or even wood and metal, understanding the RUBI blade colours can significantly improve both efficiency and finish quality. Below is a breakdown of what each colour means and how to choose the correct blade for your next job.
Blue – For Hard Materials (Porcelain & Slate)
Blue RUBI blades are engineered for the toughest materials. Designed primarily for porcelain and slate, these blades incorporate a high-quality diamond matrix to withstand dense, hard surfaces while delivering smooth, chip-free cuts.
Ideal for:
- Porcelain tiles
- Natural slate
- Other hard stone materials
- If you’re frequently cutting premium porcelain slabs or dense natural stone, the blue blade is the reliable workhorse you need.
Red – For Porcelain Only
Red blades specialise exclusively in porcelain. This makes them the go-to choice when working with modern porcelain formats—whether thin, large-format, or rectified. They are manufactured to resist the extreme hardness of porcelain while maintaining precision and edge integrity.
Ideal for:
- All porcelain tile types
- Projects where clean edges are essential
- When absolute accuracy and minimal chipping on porcelain are critical, choose red.
Green – For Ceramic
The green blades are tailored for ceramic tiles, offering a cleaner, smoother cut than more general-purpose blades. Ceramic is softer than porcelain, so these blades are designed to cut quickly without overheating or over-grinding the material.
Ideal for:
- Standard ceramic wall and floor tiles
- Renovation and refurbishment projects
- If your job involves predominantly ceramic tiles, the green blade provides both speed and consistency.
Orange – For Abrasive Materials (Sandstone & Similar)
Abrasive materials like sandstone and other soft, gritty stones quickly wear down standard blades. RUBI’s orange blades are specifically engineered to counter this, using a matrix that resists erosion and maintains cutting power over prolonged use.
Ideal for:
- Sandstone
- Other abrasive or soft natural stones
- For landscaping projects or stone installations where abrasiveness is an issue, orange is the best option.
Purple – For Concrete
Purple blades are the specialist choice for concrete cutting. Whether you’re working on construction, repair, or structural tasks, these blades are built for durability and efficient cutting through one of the industry’s most challenging materials.
Ideal for:
- Concrete blocks
- Reinforced and standard concrete
- Rough building materials
- Choose purple for demanding construction-grade work.
Yellow – For Plastic, Metal & Wood
Unlike the stone-focused blades, RUBI’s yellow blade stands out as a multi-material solution. Designed for versatility, it performs well on plastics, metals, and even wood—making it a valuable blade for fit-out, installation, and finishing trades.
Ideal for:
- PVC and plastic profiles
- Non-ferrous metals
- Wood trimming and shaping
- When the job involves mixed materials, the yellow blade offers convenience and adaptability.
ECD Blade – For Mitres & Curved Cuts
The RUBI ECD (Electroplated Continuous Diamond) blade is a specialist cutting solution designed not for one material, but for one purpose: precision shaping. Ideal for mitres and curved cuts, it allows tradespeople to achieve high-quality finishes with the refined control needed in detailed work.
Ideal for:
- Mitred edges
- Curved cuts on porcelain, ceramic, and stone
- Decorative shaping
- For detailed craftsmanship and finishing touches, the ECD blade is the specialist’s choice.
Final Thoughts
RUBI’s colour-coded wet and dry blade system is designed to simplify blade selection and maximise performance. By choosing the correct blade for the material at hand, you not only ensure a cleaner cut, but you also extend the lifespan of your tools and improve working efficiency.
Whether you’re a professional tiler, a stonemason, or a general builder, understanding this system allows you to work smarter, faster, and with greater confidence—whatever the material.
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