Mineral Watch Crystals: Flat and Domed

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Thickness 0,8 mm Ø 10 to 40 mm

Flat mineral crystal 0.8 mm

Thin flat mineral watch crystal, 0.8 mm thick. Available in 301 diameters from 10.0 mm to 40.0 mm, priced at €5.90.

€5.90

Only 2 left in stock

Thickness 0,7 mm Ø 12 to 34 mm

Flat mineral crystal 0.7 mm

Very thin flat mineral crystal, 0.7 mm thick. Available in 221 diameters from 12.0 mm to 34.0 mm, priced at €5.90.

€5.90

Only 1 left in stock

Thickness 0,8 mm Ø 14 to 34 mm

Domed mineral crystal 0.8 mm

Domed mineral watch crystal, 0.8 mm thick. Available in 199 diameters, from 14.0 mm to 34.0 mm, all priced at €5.90.

€5.90

Only 2 left in stock

Thickness 0,8 mm Ø 30.2 mm

Anti-reflective domed mineral crystal 0.8 mm

Domed 0.8 mm mineral crystal with anti-reflective coating. Available in one diameter only, 30.2 mm, priced at €5.90.

€5.90

Mineral crystals and their shapes

Mineral crystal is fitted to a large share of everyday watches. Its hardness is around 5 to 6 on the Mohs scale, placing it between acrylic and sapphire. This category brings together 23 products, or 3276 diameters between 10 and 50 mm, from €5.90 to €13.90 inc. VAT.

Three shape families

Flat: 0.7 to 4.0 mm thick, with a chamfered version and a rimmed version.
Domed: 0.8 to 2.0 mm, including two anti-reflective references.
Domed with base: 1.0 to 3.0 mm, the dome sitting on a flat rim.

To choose, look at the profile of the original crystal from the side: a perfectly flat surface, a continuous curve, or a curve that starts after a shoulder. Thickness is measured on the edge of the removed crystal; too thick a crystal may touch the hands or protrude above the bezel, too thin a crystal reduces the hold.

Then take the diameter with a calliper following the guide to measuring a crystal. To confirm it really is mineral, refer to the page on crystal types.

Frequently asked questions

How hard is a mineral crystal?

Approximately 5 to 6 on the Mohs scale. It resists scratches better than acrylic but less well than sapphire.

Which thicknesses are available in mineral?

Depending on the shape, 0.7 to 4.0 mm for flat, 0.8 to 2.0 mm for domed and 1.0 to 3.0 mm for domed with base.

How can I tell a domed crystal with base from a plain domed one?

Seen in profile, the domed crystal with base has a flat rim around its edge before the curve begins, whereas the plain domed crystal curves right to the edge.

Can a mineral crystal be polished?

Polishing mineral is difficult and requires specific tooling; with a deep scratch, replacement is often the chosen solution.

Are there anti-reflective mineral crystals?

Yes, two domed products in 0.8 mm and 1.0 mm are available in an anti-reflective version, each in a single diameter.