RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-05369
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July 14, 2019 at 11:10 am
#42915
DialCheck 09774Participant
Case 8 — Crystal types: sapphire, mineral and acrylic trade-offs for daily wear
Summary. Pick sapphire for scratch resistance in low-impact use, acrylic for impact tolerance and easy polishing, and mineral as a low-cost middle option. Prefer inner-surface AR if you're worried about wear. Look at crystal profile when comparing thickness. Choose by how you'll use the watch, not by the material label.