Answer
A fake Rolex white gold watch is a replica sold as 18k white gold. It is almost always 316L stainless steel with rhodium plating or a white PVD coat. Real Rolex white gold is an 18k alloy: 750 parts gold per 1000 by weight. Steel and 18k white gold look alike on a screen. They do not feel alike, weigh alike, or mark alike.
What Rolex white gold is
Rolex casts white gold cases and bracelets from 18k gold. The alloy holds 75% gold. The rest is palladium, silver, copper and other metals. The blend sets the color, and the color changes with the light and the reference. Rolex does not rhodium plate its gold cases. The metal is solid through the case.
White gold references run across the line:
- Submariner 116619LB, blue dial, 2008 to 2020.
- Daytona 116509, white gold case and bracelet.
- Day-Date 40, reference 228239.
- GMT-Master II 116719BLRO, red and blue bezel, 2014 to 2018.
- Yacht-Master 42, reference 226659.
Weight
18k white gold has a density near 15.5 g/cm3. 316L steel sits at 7.98 g/cm3. A white gold Submariner Date 116619LB weighs about 250 g. The steel Submariner Date 116610LN weighs about 155 g. That gap is close to 95 g. It shows on a kitchen scale and in the hand.
Markings
Rolex stamps gold cases with "750" and the Rolex crown. On older cases the stamp sits between the lugs. The clasp carries the same stamp. Swiss law also puts a Helvetia head hallmark on gold items. A replica in plated steel carries a laser-etched "750" or no stamp at all. The etch is shallow and sits on top of the plating, not inside the metal.
Plating wear
Plated replicas wear at contact points. Look at the clasp edges, the crown, and the bracelet links. Steel shows through as a gray-white patch with a hard edge. Real 18k white gold shows no layer boundary because there is no layer. Rub a plated piece with a cloth and a mild polish. The plate dulls or lifts.
Metal value
Gold near $2,600 per troy ounce puts 18k alloy at about $63 per gram. A case and bracelet hold about 150 g of that alloy. The metal alone runs near $9,000. A replica that sells for $300 to $600 cannot hold that metal.
Checks
- Weigh the watch. Steel sport Rolex models land between 140 g and 170 g. White gold versions land above 200 g.
- Check the stamp between the lugs and on the clasp with a loupe.
- Skip the magnet. Gold and steel are both non-magnetic here, so the test separates nothing.
- Take the watch to a jeweler with an X-ray fluorescence gun. The reading reports gold content as a percentage.
- Ask for a density measurement: weight in air, weight in water, then divide.
Legal note
US law, 18 U.S.C. 2320, makes trafficking in counterfeit goods a federal crime. US Customs and Border Protection seizes counterfeit watches at import. A seller who calls a steel watch 18k white gold also breaks Federal Trade Commission rules on gold labeling.