Short answer
A replica Rolex Day-Date with a diamond bezel is a counterfeit watch. The stones are not Rolex diamonds. Most units carry cubic zirconia, some carry moissanite or lab-grown stones. Case sizes copy the 36 mm and 40 mm Day-Date. Prices run from about $80 to $1,200 based on stone type, metal finish, and movement.
What sits in the bezel
Genuine Rolex sets the Day-Date bezel with round brilliant-cut diamonds. Replica bezels hold four stone types.
- Cubic zirconia: soft, scratches, clouds over months.
- Moissanite: higher refractive index than diamond, throws more fire and color.
- Lab-grown diamond: same carbon structure as a mined diamond, lower cost.
- Glass or crystal: found on sub-$100 units, looks flat under light.
Stone counts differ by reference and by factory. Ask the seller for the stone count, the millimeter size of each stone, and the total carat weight. A seller who cannot answer is reselling stock photos.
Case sizes and models copied
Factories copy the Day-Date 36, the Day-Date 40, and the discontinued 41 mm Day-Date II. The genuine Day-Date 40 carries a 40 mm case and the calibre 3255. Replicas ship with one of three movements: a 2836-2 clone, a 2824 clone, or a decorated clone stamped as a 3255. The stamped group costs more and needs service more often.
Metals and plating
Genuine Day-Date cases come in 18k yellow, white, or Everose gold, plus platinum. Replicas use 316L or 904L steel with one of three finishes.
- Gold plating: 3 to 10 microns. Wears through at the crown, lugs, and clasp.
- Gold wrapping: 100 to 200 microns. Lasts years with care.
- Solid gold: rare, priced close to metal value, hard to confirm without a test.
A plated case shows grey steel under the gold inside 12 to 24 months of daily wear. Look at the caseback edge and the clasp corners in photos.
Checks before paying
- Weight. A gold Day-Date weighs far more than a steel replica. Ask for a scale photo.
- Stamps. Look for 750 or 18k inside the clasp and on the caseback.
- Bezel setting. Stones sit in prongs or a channel. Loose stones, glue lines, and uneven gaps show on macro photos.
- Movement photo. The calibre 3255 uses a free-sprung balance and a 70-hour power reserve. Clone movements show a regulator arm.
- Day and date discs. Check font, spacing, and alignment at 12 and 3.
Price bands
Rough market bands: $80 to $200 for a CZ bezel and plated case. $250 to $500 for moissanite, wrapped gold, and a clone movement. $600 to $1,200 for lab-grown stones, 904L steel, and an engraved 3255 clone. Gold spot and stone cost move these numbers.
Legal status in the US
Counterfeit watches break trademark law. Import is barred. U.S. Customs and Border Protection can seize a shipment and destroy it. Selling carries fines and prison terms under 18 U.S.C. 2320. Buying from an overseas seller adds customs risk and no warranty.