A delicately veined, deep brown decorative quartz stone that creates a distinctive pattern with each iteration – no two eisenkiesel dials are the same. It confers the diamond-set Rolex Oyster Perpetual Day-Date 40 in 18ct Everose gold with a unique personality.

Launched in 1956, the Day-Date was the first calendar wristwatch to indicate, in addition to the date, the day of the week spelt out in full in an arc-shaped window at 12 o’clock on the dial – a technical feat at the time. The day of the week is available in a choice of 26 languages.

Watches in the Day-Date range are made only of precious metals – 18 ct yellow, white or Everose gold, or 950 platinum.