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Is Ammonia Bad for Your Jewelry? Why We Went Ammonia-Free in 2003

Ammonia brightens bare diamonds fast — and quietly damages pearls, treated stones, rhodium finishes and lens coatings. A founder's explanation of what to use instead.

Biodegradable vs Ammonia-Based Jewelry Cleaners — Which Is Safer? (2026)

Biodegradable vs ammonia-based jewelry cleaners — which chemistry is safer for plated jewelry, rose gold, treated stones, and modern collections. Founder analysis.

Sparklean Sparkpen vs Connoisseurs Jewelry Cleaner — Honest Comparison (2026)

Sparklean Sparkpen ($19.99, ammonia-free precision pen) versus Connoisseurs Jewelry Cleaner ($8-12, ammonia-based soak tank). When each is the right buy.

Sparklean vs Windex vs Zeiss — Honest Comparison for Eyeglasses, Jewelry & Screens (2026)

Honest head-to-head comparison of Sparklean, Windex, and Zeiss for eyeglasses, jewelry, and screens. Windex destroys AR coatings; Zeiss is travel-friendly but expensive; Sparklean is the daily-use ...

The Best Eyeglass Cleaner in 2026 — What Opticians Actually Use

Most household glass cleaners — including the famous blue one — strip the anti-reflective and oleophobic coatings off modern lenses. Here's what to use instead and why opticians recommend it.