Cali Tiger 6-Month Wear Test: Does Their Waterproof Gold Actually Tarnish?
By James H. Sterling
Understanding why Cali Tiger survives where other mid-tier jewelry fails comes down to fundamental metallurgy. Many popular jewelry brands charge upwards of $120 for "gold vermeil", a standard requiring a sterling silver base coated in at least 2.5 microns of gold. While vermeil sounds prestigious, silver is chemically temperamental. Sulfur in the air and chlorine in pools react with silver, causing oxidation that creeps through the gold layer over time.
Cali Tiger skips silver entirely. The brand uses 316L stainless steel, an iron-chromium-nickel-molybdenum alloy widely used in medical implants and diving gear. Stainless steel forms a passive chromium oxide film on its surface that prevents corrosion, rust, and acid pitting.
When PVD gold is bonded to steel, moisture cannot penetrate the base. Even if you wear a Cali Tiger necklace in hot mineral springs or ocean surf, the core will never corrode. Because the steel alloy contains virtually zero unbonded copper or reactive zinc, skin-staining chemical reactions simply do not happen. The color you see is a durable titanium nitride or vaporized gold alloy coating that resists sweat far better than conventional galvanic plating.
James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.
