Collection: DEGUSSIT® Ruby® Stones

Gesswein Ruby Stones are manufactured by Friatec-Degussit from pure, sintered crystals of synthetic ruby—completely free of bonding agents. This results in an exceptionally hard abrasive that resists wear and deformation, making it ideal for precise grinding, deburring, and fine polishing of hardened materials. These stones are not rated by conventional grit sizes but are categorized as coarse, medium, or fine due to their unique crystalline structure. Their superior durability makes them more economical over time than comparable abrasives.

Features & Applications:

• Can be used dry or with Gesswein Stoning Oil
• Made from sintered synthetic ruby; no bonding material used
• Extremely hard and shape-retentive—ideal for precision finishing
• Performs well on steel, carbide, glass, quartz, and porcelain.
• Ideal for deburring, dressing, blending, and polishing hard metals.
• Commonly used in mold & die polishing to grind, touch up or debur steel and carbide parts.
• Fine polishing of surgical stainless steel medical instruments.
• Trusted by jewelers and engravers for sharpening carbide and high-speed steel tools