Sanding Sheets & Papers – Diamond & Abrasive Sheets for Lapidary Finishing

Professional-grade sanding sheets and abrasive papers for lapidary wet and dry finishing. Available in diamond, silicon carbide, and aluminum oxide formulations across a wide grit range — from aggressive stock removal to ultra-fine pre-polish preparation. Ideal for gemstone cabochons, flat lapping, hand sanding, and machine-assisted finishing on stone, minerals, and hard materials.

Sheet Types

Related Collections

• Diamond Sanding & Abrasives
• Flexible Sanding Belts
• Flat Lap Discs
• Lapidary Grinding & Polishing
• Diamond Polishing Tools

Frequently Asked Questions

• Q: What is the difference between diamond sanding sheets and silicon carbide sheets?
  A: Diamond sanding sheets last significantly longer and cut harder materials more efficiently, making them ideal for tough gemstones like sapphire, ruby, and quartz. Silicon carbide wet/dry sheets are more economical and work well for softer stones and general lapidary sanding.
• Q: Can these sanding sheets be used wet?
  A: Yes. Diamond and silicon carbide sanding sheets are designed for wet use, which reduces heat buildup, extends sheet life, and produces a cleaner finish on gemstones and stone surfaces.
• Q: What grit should I start with for lapidary sanding?
  A: Start with a coarser grit (120–220) to remove grinding scratches, then progress through medium grits (400–600) and fine grits (1000–3000) for pre-polish preparation. The starting grit depends on the surface condition after grinding.
• Q: Are these sheets compatible with flat lap machines?
  A: Diamond sanding sheets can be used on flat lap machines with a backing plate or backer pad. Silicon carbide and aluminum oxide sheets are typically used for hand sanding or with a sanding block.
• Q: How do I know when to move to the next grit?
  A: Move to the next finer grit only when all scratches from the previous grit have been removed. Inspect under good lighting or a loupe to confirm a uniform scratch pattern before progressing.