Sintered Diamond Laps

Sintered Diamond Laps - Professional 5mm Matrix Diamond Faceting Laps, 6" and 8"

Our Sintered Diamond Faceting Laps feature a 5mm deep sintered diamond matrix - not plated, not brazed - that continuously exposes fresh cutting points as the lap wears, delivering aggressive, consistent cutting from the very first facet through years of professional use. Available in 6" ($240.00) and 8" ($395.00) diameters with grit options from 60 through 600, these laps are the professional standard for faceting medium-to-hard gemstones including quartz, beryl, tourmaline, and garnet.

Shop Sintered Diamond Laps - From $240.00

Available Sizes, Grits and Pricing

Diameter Available Grits Price
6" 60, 80, 100, 180, 240, 320, 600 $240.00
8" 60, 80, 100, 180, 240, 360, 600 $395.00

Grit Selection Guide

Grit Stage Application
60-80 Coarse grinding Rapid material removal, initial facet shaping on rough stone
100-180 Medium grinding Facet refinement, surface smoothing
240-360 Fine grinding Pre-polish facet preparation, scratch removal
600 Fine / pre-polish Final surface preparation before polishing lap stages

Compatible Applications

  • Gemstone faceting - quartz, beryl, tourmaline, garnet, and medium-to-hard gemstones (Mohs 6.5-8)
  • Sapphire and corundum faceting - sintered matrix handles Mohs 9 with longer life than plated laps
  • Professional faceting machine use - 6" and 8" diameters for standard faceting machine platens
  • Multi-stage grinding sequences - coarse through fine grit progression on a single lap format
  • High-volume production faceting - years to decades of service life vs. months for electroplated laps
  • Cabochon flat grinding - consistent cutting performance for flat base and face grinding

Related Tools

Frequently Asked Questions

  • Q: How long do sintered diamond faceting laps last compared to electroplated laps?
    A: Sintered diamond faceting laps last dramatically longer - typically years to decades of regular professional use versus months for electroplated laps on hard gemstones. The 5mm deep sintered matrix continuously exposes fresh diamond cutting points as the surface wears, maintaining consistent cutting performance throughout the lap entire working life.
  • Q: What gemstones are sintered diamond laps best suited for?
    A: Optimized for medium-to-hard gemstones - quartz (Mohs 7), beryl (Mohs 7.5-8), tourmaline (Mohs 7-7.5), garnet (Mohs 6.5-7.5). Recommended at one grit size larger than equivalent plated or brazed laps for optimal cutting performance.
  • Q: Why should I use sintered laps one grit size larger than plated laps?
    A: Sintered diamond laps cut more aggressively than electroplated laps at the same nominal grit. Using one grit size larger (e.g., 80 grit sintered instead of 60 grit plated) produces equivalent material removal rates while leaving a finer surface finish.
  • Q: What is the best polishing lap to use after sintered diamond grinding stages?
    A: For hard stones (quartz, beryl, tourmaline), use a copper lap charged with 8,000-14,000 grit diamond compound for pre-polish, then a tin lap with 50,000 grit diamond compound for final mirror polish.