Diamond polishing powder in a clear glass jar labeled “Diamond Powder Professional Polishing Grits,” fine synthetic diamond abrasive used for precision polishing of gemstones, metal, glass, ceramics, and optics. Micron-graded diamond micro powder for lapidary polishing, knife sharpening compounds, jewelry finishing, and mirror-finish abrasive applications.

Diamond Powder Grits: Gem, Metal, Glass, Crystal & Jewelry Polishing Supplies

w28 (700) / 25 Carats (5 Grams)
$19.00
$19.00
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Diamond polishing powder in a clear glass jar labeled “Diamond Powder Professional Polishing Grits,” fine synthetic diamond abrasive used for precision polishing of gemstones, metal, glass, ceramics, and optics. Micron-graded diamond micro powder for lapidary polishing, knife sharpening compounds, jewelry finishing, and mirror-finish abrasive applications.
  • Diamond polishing powder in a clear glass jar labeled “Diamond Powder Professional Polishing Grits,” fine synthetic diamond abrasive used for precision polishing of gemstones, metal, glass, ceramics, and optics. Micron-graded diamond micro powder for lapidary polishing, knife sharpening compounds, jewelry finishing, and mirror-finish abrasive applications.
  • Synthetic diamond micro powder packaged in a small plastic bag labeled W0.5 100ct, shown beside a U.S. quarter for size reference. Ultra-fine micron-graded diamond polishing powder used for lapidary gemstone polishing, metal finishing, knife sharpening strops, glass restoration, and precision mirror-finish polishing across hard materials.
  • Diamond polishing powder mixed into a smooth grey slurry on a glass plate with a metal spatula, demonstrating how micron-graded diamond abrasive powder can be blended into polishing paste for lapidary work, jewelry finishing, knife stropping compound, optics polishing, and precision metal mirror finishing.
  • Four bags of micron-graded diamond polishing powder labeled W0.5 100ct, W3 100ct, W1 100ct, and W7 100ct. Text above reads “See Variations at checkout for GR Weight.” Synthetic diamond abrasive powders used for lapidary polishing, gemstone finishing, sharpening compounds, and precision polishing applications.
  • Watchmaker polishing a metal watch case with a rotary tool and diamond polishing compound beside a dish of grey polishing paste. Text overlay reads “For the modern maker.” Demonstrates diamond abrasive used for jewelry polishing, metal finishing, watch restoration, and precision mirror polishing.
  • Two faceted gemstones displayed after polishing, showing reflective surfaces achieved with micron-graded diamond polishing powder. Image includes brand text “Aetherium Innovations.” Demonstrates lapidary polishing results for gemstones using precision diamond abrasive compounds.
  • Diamond polishing powder in a clear glass jar labeled “Diamond Powder Professional Polishing Grits,” fine synthetic diamond abrasive used for precision polishing of gemstones, metal, glass, ceramics, and optics. Micron-graded diamond micro powder for lapidary polishing, knife sharpening compounds, jewelry finishing, and mirror-finish abrasive applications.
  • Synthetic diamond micro powder packaged in a small plastic bag labeled W0.5 100ct, shown beside a U.S. quarter for size reference. Ultra-fine micron-graded diamond polishing powder used for lapidary gemstone polishing, metal finishing, knife sharpening strops, glass restoration, and precision mirror-finish polishing across hard materials.
  • Diamond polishing powder mixed into a smooth grey slurry on a glass plate with a metal spatula, demonstrating how micron-graded diamond abrasive powder can be blended into polishing paste for lapidary work, jewelry finishing, knife stropping compound, optics polishing, and precision metal mirror finishing.
  • Four bags of micron-graded diamond polishing powder labeled W0.5 100ct, W3 100ct, W1 100ct, and W7 100ct. Text above reads “See Variations at checkout for GR Weight.” Synthetic diamond abrasive powders used for lapidary polishing, gemstone finishing, sharpening compounds, and precision polishing applications.
  • Watchmaker polishing a metal watch case with a rotary tool and diamond polishing compound beside a dish of grey polishing paste. Text overlay reads “For the modern maker.” Demonstrates diamond abrasive used for jewelry polishing, metal finishing, watch restoration, and precision mirror polishing.
  • Two faceted gemstones displayed after polishing, showing reflective surfaces achieved with micron-graded diamond polishing powder. Image includes brand text “Aetherium Innovations.” Demonstrates lapidary polishing results for gemstones using precision diamond abrasive compounds.
Diamond Powder Grits: Gem, Metal, Glass, Crystal & Jewelry Polishing Supplies

Diamond Powder Grits: Gem, Metal, Glass, Crystal & Jewelry Polishing Supplies

6 reviews

$19.00
$19.00
Shipping calculated at checkout.
Grits
Weight

In stock: 1-3 business days

Chasing the final polish.. for the finest you'll need the finest..
You’re buying more than just diamond powder; you’re buying versatility.

These diamonds aren't only for polishing gemstones.
It’s your go-to for restoring scratched glass, flattening metal tools, smoothing ceramics, fine-tuning optics, refreshing jewelry, and even sprucing up marble or tile
This delivers precision from pre-polish to mirror finish across hard and soft materials alike.

You can load it into a felt wheel, press it into leather, burnish it onto wood, or—if you’re feeling fancy—mix it with a few drops of glycerin and make your own diamond paste. Need it thinner? Use water. Going oil-based? Baby oil or DPG works just fine. Still not cool enough? Bind it into resin and make your rotary abrasives.
No chemistry degree required.

Whether you're dialing in a final polish or experimenting with a new grit series, these abrasives give you a professional-grade option without buying in bulk.
Just enough to test, plenty to finish.

Each Purchase = 25 carats (5 grams by weight)

Sizes include
• W28 = 20–30 µm (700 grit)
• W14 = 7–14 µm (1500 grit)
• W3 = 2–3 µm (7000 grit)
• W1.5 = 1–2 µm (12000 grit)
• W1 = 0–1 µm (15000 grit)
• W0.5 = 0–0.5 µm (30000 grit)
• W0.25 = 0–0.25 µm (60000 grit)

Don't see your grit? Message me, happy to help.

for the modern maker.
Proudly made and tested in the PNW, USA.

Every order supports Aetherium Innovations and our mission to develop tools and technologies that lower the barriers in the skilled art trades.

Bench-tested

Modular by design

Direct builder support

Pacific Northwest built

Build & Support

Aetherium products are developed around real workshop and field workflows. If you need dimensions, compatibility guidance, replacement components, or help adapting this product to your setup, contact the workshop before ordering.
Shipping & Returns

The production estimate shown near the purchase button is the current working lead time for this item. Shipping is calculated at checkout.

If an order arrives damaged, does not match what you received approval for, or you need to request a return, contact us with the order number and photos when applicable. We will review the situation directly and help determine the right next step.

Complete the system

Why Aetherium

Built like someone has to use it.

We design around real workflows, direct feedback, and the belief that a good tool should expand what its owner can do.

Bench-testedDeveloped around real workshop problems, not trend forecasts.
Small-batchProduced deliberately with clear lead times and direct accountability.
AdaptableModular, repair-minded systems designed to evolve with the work.
Direct supportCompatibility question? You can talk to the person who built it.
Unsure whether this fits your setup?Send the workshop a photo or a short description before you order.
Ask a compatibility question