The Other Rolex: The Day-Date’s Colourful Years
YC JINGShare
Say Rolex, and most people will picture a Submariner, a GMT-Master, or a Daytona. Fair enough. Diving, flying, racing: these watches have given Rolex some very good stories to tell, and collectors have spent decades getting to know practically every detail of them.
But spend a little time with the Day-Date, particularly the gem-set watches of the 1980s, and you discover a Rolex with a rather different set of interests.
Here is a brand matching blue calendar discs to sapphire hour markers, covering dials in intricate patterns of rubies and diamonds, and fitting bracelets that deserve a close look all by themselves. On certain watches, Rolex even moved its signature onto the crystal to leave more room for the stones.
That last detail is worth sitting with for a moment. A company whose coronet is among the most recognisable symbols in watchmaking decided that, on this particular dial, the diamonds should have the space.
There is a lot to enjoy here. The more closely you look, the more considered these watches become. Colours repeat across tiny details. Different stone shapes change the character of the same 36mm case. Familiar calendar windows suddenly become part of an elaborate jewellery design.
And through all of it, they remain unmistakably Day-Dates.

First, A Little History
The Day-Date arrived in 1956 with an impressive technical claim: a wristwatch displaying both the date and the day of the week spelled out in full. Made in precious metals and offered on the new President bracelet, it occupied a particularly elevated place in the Rolex range from the beginning.
Its association with presidents, business leaders, and public figures only strengthened that position. If Rolex wanted a place to explore its more extravagant ideas, the Day-Date was a very natural choice.

Elvis and his diamond-bezel Day-Date
Diamonds appeared early. Surviving examples from 1958 already show diamond hour markers, and by the beginning of the 1960s, references such as the 1804 gave the Day-Date a dedicated diamond-set bezel.
These were serious luxury objects, and Rolex was happy to make the point. A 1971 advertisement compared the price of a platinum, diamond-set Day-Date with that of a Porsche 911 E Targa. The Porsche cost $135 more.

1971 Rolex Platinum and Diamond Day-Date Advertisement for the U.S. Market | Source:Ad Patina
You have to admire the confidence of putting that in an advertisement for the watch.
By the 1980s, coloured gemstones gave Rolex an even broader set of possibilities. Across the watches associated with its Crown Collection, the Day-Date became a setting for experiments in colour, stone cutting, and dial construction. Looking at a few of these references together, you begin to appreciate just how much variety could exist within such a familiar design.
A 1977 Day-Date 1804 with sapphires set into the center links of the bracelet | Source:Phillips
01. The Colour Families: Refs. 18058, 18068, And 18158
Rolex Day-Date Ref. 18058
The sapphire-set reference 18058 makes a very good introduction.
The basic architecture is familiar: a 36mm yellow-gold Oyster case, a President bracelet, and the self-winding calibre 3055. This is the single-quickset generation, meaning the date can be corrected directly through the crown, while changing the weekday still requires advancing the hands.
All reassuringly normal Day-Date territory. Then you look at the front.
Deep blue sapphires surround a diamond pavé dial, with sapphire hour markers bringing the colour inward. The blue continues into the day and date discs. Even the calendar has been invited to participate.

That continuity is what makes the watch so satisfying. The eye moves from bezel to markers to calendar, finding the same blue in three different places. Against the yellow gold, it has real warmth and depth; the diamonds supply the sparkle around it.
The small, square-cut bezel stones also give this watch a particular character. Closely arranged around the case, they create a neat, almost tiled border. It is a very different effect from a ring of round diamonds, and different again from the longer baguettes we will get to shortly.

Then there is the signature. On this pavé execution, the coronet and ROLEX name sit on the underside of the sapphire crystal, apparently suspended above the dial. The diamond setting can continue beneath them. It is a wonderfully clever solution, and exactly the sort of detail that makes a watch more interesting the second time you look at it.
Black hands complete the composition, giving your eye something solid to follow across all that light.

Rolex Day-Date Ref. 18068
The ruby-set reference 18068 explores the same idea in red, while the emerald-set 18158 completes the trio. Seen together in period catalogue illustrations, they make a persuasive case for colour as the organising principle of a watch. Each version has its own mood, even though the underlying Day-Date is so familiar.

Rolex Crown Collection Sales Catalogue | Source:Californial21
For me, the appeal is in that consistency. Somebody thought about how the whole thing would look, right down to the colour inside two very small windows.
02. Mixing Things Up: Refs. 18178, 18188, And 18198
Rolex Day-Date Ref. 18178
With the reference 18178, Rolex puts several colours around the same bezel.
Rubies, emeralds, and sapphires alternate in a repeating sequence of red, green, and blue. There is something almost Christmas-like about the combination. It is cheerful, a little exuberant, and quite hard to look away from.

There is a useful distinction here from the rainbow bezels familiar to collectors today. Those can use sapphires selected across a spectrum of colours. Here, the palette comes from three different gemstones, each with its own optical character.
The square-cut arrangement is documented in Rolex’s own literature: its 1992 US price list specifies 17 emeralds, 17 sapphires, and 17 rubies for the 18178. Fifty-one coloured stones around a 36mm watch is quite a proposition.
On the example here, ruby hour markers give the dial a clear rhythm, while diamonds carry the jewellery treatment into the bracelet. There is plenty going on, but the repetition of colour keeps it coherent.

The related reference 18188 brings diamonds into the bezel sequence itself. White flashes interrupt the red, green, and blue, changing the balance again. A champagne dial can give that colourful frame some breathing room, as on the 18188A documented by Phillips.
Rolex Day-Date 18188A | Source:Phillips
It is also worth keeping the reference 18198 in mind: the triangular-cut multicolour bezel belongs to that related branch of the family. These are closely connected watches, with meaningful differences in how the stones are cut and arranged.

Rolex Day-Date 18198 | Source:Hackettwatches
That variety is a large part of the attraction. You can spend a long time looking at Day-Dates and still find a configuration that makes you stop and look again.
03. A Change In Proportion: Ref. 18168
Rolex Day-Date Ref. 18168
The reference 18168 shows how much the shape of a stone can change a watch.
Its bezel uses 24 elongated baguette-cut stones. Compared with the smaller square stones of the 18058, those longer faces create a broader, more architectural frame. The Day-Date acquires a different presence without needing a larger case.
The ruby version is especially appealing. Ruby hour markers sit on a champagne dial, the red calendar discs pick up their colour, and diamonds add brightness to the dial and the centre links of the President bracelet.

Red, yellow gold, and white diamonds could easily become an overwhelming combination. Here, the depth of the rubies and the warmth of the dial give it a surprisingly settled character. There is something almost wine-like about that red. It is extravagant, certainly, but you can imagine spending a lot of time wearing it.

The sapphire-bezel example takes the same reference somewhere much livelier.
Its honeycomb dial is built on an 18k gold base and set with diamonds, rubies, and sapphires in a repeating geometric pattern. The red and blue stones give the surface a rhythm that draws your eye around the calendar openings. There is an extraordinary amount of work packed into a very small space.
Here, the ROLEX and DAY-DATE signatures sit on separate gold plaques, small islands of lettering within the setting. It is another example of Rolex adapting the dial furniture to suit the jewellery work. Beside the crystal-mounted signature on the 18058, it gives us two quite different answers to the same design problem.

The bracelet deserves its own moment, too. This watch wears a diamond-set Jubilee with a concealed clasp. Its smaller links bring a different texture from the President, and the diamonds along the centre carry the complexity of the dial down the wrist.
I like that the bracelet changes the whole personality of the watch. You can follow a single reference number and still arrive at two very different Day-Dates.
04. Into The Next Generation: Refs. 18366 And 18368
Rolex Day-Date Ref. 18366
There was a practical development alongside all this visual experimentation. In 1988, Rolex introduced calibre 3155, bringing the Day-Date its double-quickset calendar. Both the weekday and the date could now be corrected independently through the crown.
Anyone who has picked up an earlier Day-Date after a few weeks in the safe will appreciate that improvement.
The yellow-gold reference 18368 and platinum reference 18366 carried the baguette-bezel idea into this generation. In these references, the final digit identifies the case metal: 8 for yellow gold, 6 for platinum.
The platinum 18366 shown here is a lovely change of pace. Its Pleiade dial leaves space between the small diamonds, with blue sapphire hour markers providing stronger points of colour. Around it, baguette-cut diamonds form a crisp, continuous frame.

The effect is almost celestial. The little diamonds suggest scattered stars, while the sapphires give the eye something more definite to settle on. Platinum adds its own cool tone to the composition.
After the dense pavé and saturated colours of the earlier watches, the open space on this dial feels particularly beautiful. It shows how much range Rolex could find within a gem-set Day-Date: even the amount of visible dial surface becomes an important design choice.
Why These Watches Stay With Me
What keeps drawing me back to these Day-Dates is how much there is to discover after the initial impression.
At first, you see the gemstones. Then you notice the matching calendar discs, the black hands, the little gold signature plaques, or the way a particular bracelet changes the balance of the watch. You start paying attention to the size and shape of each stone, and to how much visible gold is left between them.
Those details give each watch its character. They also reveal a remarkably adventurous period in Rolex design. The familiar Day-Date case provided enough continuity for the brand to try some fairly extraordinary things around it.

Looking at today’s elaborate gem-set Rolexes, especially the rainbow Daytonas, the family resemblance is easy to see. These earlier Day-Dates already contain so much of that interest in colour, continuity, and carefully arranged stones.
But they are worth enjoying on their own terms, too. A sapphire bezel with blue calendar discs. Rubies against a champagne dial. A field of diamonds with a coronet floating above it.
I love that all of this fits inside a 36mm Day-Date. There is enough going on to keep a collector occupied for years, and enough personality to make you smile every time you put one on.