Disc Grit Sizes

Disc Grit Sizes – Shop Diamond Discs by Grit for Lapidary & Flat Lap

Browse diamond flat lap discs and grinding discs organized by grit size — from coarse 60 grit stock removal through 3000+ grit pre-polish stages. Find the exact grit you need for your current lapidary grinding, pre-polish, or finishing stage without searching through full product ranges.

🔥 Shop by Grit Size

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Grit Size Guide

Grit Range Stage Bond Type Application
60–120 Coarse grinding Metal Bond Initial stock removal, rough shaping
220–325 Medium grinding Metal / Hybrid Bond Refines shape after coarse stage
600 Fine grinding Resin Bond Removes medium grinding scratches
1200 Pre-polish Resin Bond Core lapidary pre-polish stage
3000 Fine pre-polish Resin Bond Near-mirror surface before final polish
8000+ Ultra-fine pre-polish Resin Bond High-gloss finish on hard gemstones

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Frequently Asked Questions

  • Q: What grit should I start with for lapidary grinding?
    A: Start with the coarsest grit needed to remove existing damage or shape the stone — typically 80–120 grit metal bond for rough shaping. If the stone surface is already smooth from sawing, you may start at 220–325 grit.
  • Q: Do I need every grit in the sequence?
    A: Not necessarily. A standard 4-stage sequence (120 → 600 → 1200 → 3000 grit) covers most lapidary work. Add intermediate grits (220, 325) for hard or abrasive stones where larger grit jumps leave deep scratches.
  • Q: What grit comes after 3000 before final polish?
    A: After 3000 grit resin pre-polish, apply a final polish compound (cerium oxide, diamond paste, or aluminum oxide) on a leather, felt, or ceramic lap. No additional grit disc is needed between 3000 and final polish for most stones.
70 products
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    from $18.80
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  • Diamond Magnetic Backing Dot Lap
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  • Diamond Flat Lap Disc
    from $10.26
    from $10.26
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  • Nickel Bonded Full Face Diamond Flat Lap
    from $11.54
    from $11.54
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  • Diamond Flat Lap Disc
    from $10.68
    from $10.68
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  • Nickel Bonded Full Face Diamond Flat Lap
    from $11.54
    from $11.54
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  • Nickel Bonded Full Face Diamond Flat Lap
    from $11.54
    from $11.54
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  • Diamond Flat Lap Disc
    from $16.24
    from $16.24
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  • Diamond Flat Lap Disc
    from $16.24
    from $16.24
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  • Diamond Flat Lap Disc
    from $16.24
    from $16.24
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  • Diamond Flat Lap Disc
    from $16.24
    from $16.24
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  • Diamond Flat Lap Disc
    from $16.24
    from $16.24
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  • Diamond Flat Lap Disc
    from $16.24
    from $16.24
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  • Diamond Flat Lap Disc
    from $16.24
    from $16.24
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  • 24inch Diamond Laps
    from $18.80
    from $18.80
    Sold out
  • 24inch Diamond Laps
    from $18.80
    from $18.80
    Sold out
  • 24inch Diamond Laps
    from $18.80
    from $18.80
    Sold out
  • 24inch Diamond Laps
    from $18.80
    from $18.80
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  • Diamond Flat Lap Disc
    from $10.68
    from $10.68
    Sold out
  • Diamond Flat Lap Disc
    from $10.68
    from $10.68
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  • Diamond Flat Lap Disc
    from $10.68
    from $10.68
    Sold out
  • Nickel Bonded Full Face Diamond Flat Lap
    from $11.54
    from $11.54
    Sold out
  • Nickel Bonded Full Face Diamond Flat Lap
    from $11.54
    from $11.54
    Sold out
  • Nickel Bonded Full Face Diamond Flat Lap
    from $11.54
    from $11.54
    Sold out
  • Nickel Bonded Full Face Diamond Flat Lap
    from $11.54
    from $11.54
    Sold out
  • Nickel Bonded Full Face Diamond Flat Lap
    from $11.54
    from $11.54
    Sold out
  • Nickel Bonded Full Face Diamond Flat Lap
    from $11.54
    from $11.54
    Sold out
  • Diamond Flat Lap Disc
    from $16.24
    from $16.24
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  • Diamond Flat Lap Disc
    from $10.68
    from $10.68
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  • Diamond Flat Lap Disc
    from $16.24
    from $16.24
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  • Diamond Flat Lap Disc
    from $16.24
    from $16.24
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  • 24inch Diamond Laps
    $8.55
    $8.55
    Sold out
  • 24inch Diamond Laps
    from $18.80
    from $18.80
    Sold out
  • 24inch Diamond Laps
    from $18.80
    from $18.80
    Sold out
  • 24inch Diamond Laps
    from $18.80
    from $18.80
    Sold out
  • 24inch Diamond Laps
    from $18.80
    from $18.80
    Sold out
  • 24inch Diamond Laps
    from $18.80
    from $18.80
    Sold out
  • Diamond Magnetic Backing Dot Lap
    from $14.10
    from $14.10
    Sold out
  • Diamond Magnetic Backing Dot Lap
    from $14.10
    from $14.10
    Sold out
  • 24inch Diamond Laps
    from $18.80
    from $18.80
    Sold out