100x Mineral Watch Glasses Crystals 30mm - 39mm Flat Glass Replacement Repairs

A complete bench stock of flat mineral watch crystals spanning every 0.5mm size from 30mm to 39.5mm, with 5 pieces of each size included.

⭐ At a glance

📏 Sizes: 30mm to 39.5mm, in 0.5mm steps (20 sizes)

📦 100 crystals total — 5 pieces of each size

📏 Thickness: 1mm, flat profile

Colour: Clear

✔️ Condition: New with tags

✅ Fits

These are flat, hard mineral glass crystals suitable for repairing watches that take a flat crystal in a matching diameter. With sizes covering 30mm right up to 39.5mm in 0.5mm increments, this pack is built to have the right size on hand for most flat-glass repair jobs across a workshop or collection.

⚠️ Please check the diameter and thickness of the crystal you're replacing before fitting — mineral glass must match the case seat size and depth exactly, and this pack contains flat crystals only (not domed or curved profiles).