Zinc Laps – Professional Lapidary Polishing Laps for Hard Gemstones

Zinc polishing laps deliver consistent pre-polish and final polish results on hard gemstones including quartz, agate, jasper, tourmaline, and beryl. The dense zinc alloy surface charges readily with diamond compound or cerium oxide, providing a flat, stable polishing platform for both cabochon and faceting work.

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Frequently Asked Questions

• Q: What compound should I use with a zinc lap?
  A: Zinc laps work best with diamond paste (0.5–3 micron) or cerium oxide for hard stones like quartz and agate. Apply a small amount of compound and spread evenly before polishing.
• Q: Can I use a zinc lap for faceting?
  A: Yes. Zinc laps are widely used in faceting for the pre-polish and polish stages, particularly on hard minerals (Mohs 7+) such as quartz, tourmaline, and beryl.
• Q: How do I charge a zinc lap?
  A: Apply a small amount of diamond paste or oxide compound to the lap surface and spread with a finger or soft cloth. Run the lap at low speed to work the compound into the surface before polishing.
• Q: Do zinc laps need to be used wet?
  A: Yes. Always use zinc laps with water or a light lubricant to prevent overheating, extend lap life, and achieve the best polish quality.
• Q: What sizes are zinc laps available in?
  A: Zinc laps are available in standard 6-inch and 8-inch diameters to fit most flat lap and faceting machines. Browse Zinc Laps →