RE: [Demo notebook] Workbench questions: what to record before asking for service · RWI-21987

Case 22 — Crystal types: sapphire, mineral and acrylic trade-offs for daily wear

Spec sheets list sapphire, mineral or acrylic crystals, and opinions in threads are very strong. For a daily-wear watch, what are the real trade-offs, and is an anti-reflective coating worth paying for?

Exercise RWI-21987/22: address this question within its stated limits.