Application Hub · Grade Selection
Jewelry & Gemstone
Final polishing for gemstones and natural diamond.
Sub Applications
Solutions In This Category
Gemstone polishing rejects any particle that can leave a visible scratch on a finished stone, so the grade is bought on the strength of its oversize control and its consistency from lot to lot. Both natural and synthetic stones are finished with the same fine micron series.
Diamond Grades For This Category
| Process step | Grade direction | Size range |
|---|---|---|
| Gemstone polishing | Monocrystalline HDY yellow, HDG black economy | 0–0.5, 0–1, 1–2, 2–3 µm |
| Natural diamond finishing | HDG black micron | 0–0.5, 0–1 µm |
| Tumbling and pre-polish | Coarse to medium micron | 2–4, 4–8 µm |
Selection Notes
How To Choose The Right Grade
- Oversize content is the single number that decides whether a polishing grade is usable on finished stones.
- Ask for the maximum particle size, not the D50 — the largest particle sets the scratch depth.
- We supply evaluation samples in small quantities so you can test on your own stones before committing.
Inquiry
What To Include
Start from the application requirement. We will help narrow the grade, particle size and packing route.
1Stone type and hardness
2Process stage (pre-polish / final polish)
3Scratch tolerance
4Preferred form (powder / paste)