Zinc Polishing Pads

Zinc Polishing Laps – Precision Zinc Lapping & Faceting Laps for Diamond Compound Polishing, 6" & 8"

Our Zinc Lapping, Polishing and Faceting Laps are precision-machined from high-quality zinc for excellent wear resistance and consistent, repeatable results across lapping, polishing, and faceting applications. The zinc surface accepts diamond compound charge readily and delivers a controlled, even polishing action on gemstones, glass, and synthetic crystals. Available in 6" ($55.00) and 8" ($125.00) diameters at 1/2" thickness, compatible with most standard lapidary faceting machines.

🔥 Shop Zinc Polishing Laps – From $55.00

Available Sizes & Pricing

Diameter Thickness Center Hole Price
6" 1/2" 1/2" $55.00
8" 1/2" 1/2" $125.00

Where Zinc Fits in the Polishing Sequence

Stage Lap Type Compound
Grinding Sintered Diamond Lap —
Pre-polish Zinc Lap 3,000–8,000 grit diamond compound
Polish Zinc or Copper Lap 14,000–50,000 grit diamond compound
Final Mirror Polish Tin Lap 50,000–80,000 grit diamond compound

Compatible Applications

  • Gemstone faceting pre-polish — removes grinding scratches before final mirror polish on tin lap
  • Intermediate polish on quartz, beryl, tourmaline, and garnet (Mohs 6.5–8)
  • Synthetic gemstone polishing — cubic zirconia, synthetic corundum, and synthetic spinel
  • Glass lapping and polishing — controlled zinc surface for optical glass pre-polish stages
  • Lapidary faceting machine use — 6" and 8" with 1/2" center hole for standard faceting spindles
  • Diamond compound charging — zinc surface holds 3,000–50,000 grit compound evenly

Related Tools

Frequently Asked Questions

  • Q: What is a zinc lap used for in gemstone faceting?
    A: A zinc lap is used for pre-polish and intermediate polish stages in gemstone faceting. Charged with 3,000–8,000 grit diamond compound, it removes fine scratches left by diamond grinding laps and prepares the facet surface for final mirror polish on a tin or copper lap.
  • Q: What diamond compound grit should I use on a zinc polishing lap?
    A: For pre-polish, use 3,000–8,000 grit diamond compound. For intermediate polish, use 14,000–50,000 grit before moving to a tin lap for final mirror polish.
  • Q: How does a zinc lap compare to a copper lap for gemstone polishing?
    A: Copper is harder and better suited for aggressive pre-polish on very hard gemstones (Mohs 8+). Zinc is slightly softer and more versatile — effective for pre-polish and intermediate polish on a wider range of gemstone hardnesses.