Diamond Paste
Super-polish for precision glass
Ultra-fine monocrystalline synthetic diamond particles suspended in a water-soluble carrier paste. For achieving surface qualities that exceed cerium oxide capabilities — Ra ≤ 0.01μm.
How diamond paste works
Four stages of precision mechanical polishing — from grit selection to super-polish.
Grit Selection
Choose diamond size based on target surface quality: 6μm for pre-polish, 3μm for standard mirror, 1μm for fine mirror, 0.5μm for super-polish, 0.25μm for ultra-finish.
Why diamond paste excels
Four design advantages that make diamond paste the pinnacle of glass surface finishing technology.
Monocrystalline Diamonds
Single-crystal diamonds with controlled fracture patterns. No oversized particles that cause scratching — every particle cuts at its specified size.
Laser-Verified Sizing
Each batch is laser-verified to ensure 95% of particles fall within the specified size range. Eliminates the variability of cheaper crushed diamond pastes.
5-Grade Range
From 6μm pre-polish to 0.25μm ultra-finish. Each grade is optimized for its specific position in the polishing sequence.
Water-Soluble Carrier
The carrier paste dissolves in water for easy cleanup. No solvents required — safer for operators and environmentally responsible.
Technical details
Ultra-fine monocrystalline synthetic diamond particles in water-soluble carrier paste. For achieving surface qualities that exceed cerium oxide capabilities.
How It Compares
Diamond paste dominates Surface Quality (98) — the ultimate polishing compound for precision glass.
Diamond paste scores highest in Surface Quality (98) — making it the optimal choice for applications where surface finish is non-negotiable: optical glass, display covers, and precision components.
Where diamond paste excels
From precision optics to display cover glass, diamond paste delivers the finish your most demanding applications require.
Optical Glass
Precision edge finishing on lenses, prisms, and optical components where surface quality directly affects optical performance and light transmission.
Glass Types
Recommended Grits
Display Cover Glass
Super-polish finishing on cover glass for smartphones, tablets, TVs, and automotive displays where edge quality directly affects visual appearance and tactile feel.
Glass Types
Recommended Grits
Choose your grade
Two quality tiers for diamond polishing paste — pick the right balance of purity, precision, and cost for your operation.
Standard
Reliable, cost-effective polishing materials for high-volume production where good-enough quality meets maximum throughput.
High-volume production where cost per meter matters most
Features
- Industry-standard purity and grading
- Consistent batch-to-batch quality
- Suitable for architectural and construction glass
- Volume pricing available
- Standard packaging and delivery
Premium
Enhanced formulations with tighter specifications for applications demanding superior surface quality and longer material life.
Premium architectural, automotive, and decorative glass
Features
- Higher purity grades (99.5%+ cerium, monocrystalline diamond)
- Tighter particle size distribution
- Extended material life and consumption efficiency
- Enhanced packaging to preserve shelf life
- Technical support included
Keep Them Polishing
Five essential practices to maintain super-polish quality and maximize diamond paste performance.
Never skip grit sizes. Start with 6μm and progress through 3μm, 1μm, 0.5μm, and 0.25μm. Skipping causes scratches that require re-polishing from the beginning.
Thoroughly clean the glass and polishing wheel between each grit change. Residual coarse particles in a fine grit stage cause catastrophic scratching.
Diamond polishing generates heat. Keep the glass below 40°C during polishing. Exceeding this temperature can cause thermal stress and surface crazing.
Assign specific polishing wheels to each grit size. Cross-contamination between grits is the most common cause of polishing defects.
Diamond paste dries out when exposed to air. Always reseal tubes immediately after use. Dried paste can be rehydrated with a few drops of water.
Common questions
Get a quote
Tell us about your diamond paste requirements and our materials team will recommend the right grit sequence.
24-hour response
We never leave you waiting
Free consultation
Material selection & process advice
Custom formulations
Tailored grit and concentration
Achieve super-polish perfection
Get a tailored recommendation for your precision polishing setup — including grit sequence, concentration, and process parameters for your glass type.