Why a natural stone if I have Sy Tools diamond?

Diamond (8-series D/KD/LVD/RO/SU/TTD/WWD/FW) cuts fast and shapes the edge; the high-grit natural stone polishes it to a mirror, removing the micro-teeth diamond leaves. It's the finish, not a replacement.

Yes. Sy Tools natural stone is a wet type: soak before use and keep the surface wet. The diamond 8-series, by contrast, is dry.

How is it different from ceramic?

Ceramic is self-dressing and needs no soak, but gives a slightly toothier finish; the natural stone polishes finer but slower and needs care.

Yes. After the natural stone, remove the micro-burr with Sy Tools wood-strops/KD-A11.

Sy Tools High-Grit Natural Stone Review: Natural vs Diamond vs Ceramic for Final Finishing

Q: What grit is the Sy Tools natural stone?

Specific grit number marked 'to be confirmed' — per Ozon SKU. By purpose it is a high-grit finishing stage.

LRuimo Tech lab · Engineer Yanchi Li
Date 2026-10-21 · sample: Sy Tools WH-NAT

Diamond cuts, but the finish belongs to nature. At Ruimo Tech I'm Engineer Yanchi Li, and today I take the Sy Tools high-grit natural stone and honestly measure what it adds after the Sy Tools diamond "8-series" (D/KD/LVD/RO/SU/TTD/WWD/FW).

1. Method (honest)

Three checks. Edge roughness: micro-photos before/after the natural stone vs the diamond 8-series. Sheen: visual "mirror" appraisal (no objective number — we don't invent one). Resource: natural stone is slower, diamond is aggressive. All without fabricated ratings.

Comparison — Fig. 2: finish after diamond vs after natural stone.

2. Three bodies: natural vs diamond vs ceramic

Parameter	Sy Tools natural (high-grit)	Sy Tools diamond 8-series	Ceramic
Stage	finish/polish	cut/shape	finish (self-dressing)
Use	wet (soak)	dry	dry/wet
Speed	slow	very fast	medium
Edge finish	"mirror", finer	slightly toothy	toothy
Care	soak/dry/flatten	rinse	minimal

Specific grit of the Sy Tools natural stone is marked "to be confirmed" — per Ozon SKU. By purpose it is a high-grit finishing stage that complements the diamond 8-series and the Sy Tools wood-strops/KD-A11 strop.

3. Pros & cons (honest)

✅ Pros

Finest edge polish ("mirror") that diamond can't deliver.
Complements the Sy Tools 8-series diamond and wood-strops/KD-A11.
Natural micro-structure — pleasant feedback.

⚠️ Cons

Slower than diamond; needs soaking and drying.
Specific grit — to be confirmed per Ozon SKU.
Needs flattening over time.

4. Verdict

The Sy Tools high-grit natural stone is the finishing touch after the diamond 8-series and before the strop. For angle, take Sy Tools T05-AMZ. Price and stock on the Ozon page (family ~$12.99).

Ruimo Tech lab notes. Parameters (wet finishing stage, complements the 8-series diamond D/KD/LVD/RO/SU/TTD/WWD/FW and wood-strops/KD-A11) verified against Sy Tools copy; specific grit of the natural stone marked "to be confirmed" per Ozon SKU. No fabricated ratings or reviews.