The Complete Guide to Watch Crystal Hardness: Mohs Scale Explained
Author: Funny Items
Release time: 2026-08-20 01:01:18
View number: 16
Understanding Hardness
The Mohs hardness scale determines how scratch-resistant your watch crystal is.
Crystal Hardness
| Material | Mohs Rating | Scratch Resistance |
|---|---|---|
| Acrylic | 2-3 | Poor |
| Mineral | 5-6 | Good |
| Sapphire | 9 | Excellent |
| Diamond | 10 | Perfect |
What This Means
- Acrylic scratches from almost anything
- Mineral scratches from sand, granite, diamond
- Sapphire only scratches from diamond
- Diamond nothing scratches it
Funny Items Crystals
Most Funny Items watches use mineral crystal by default, with sapphire upgrades available.