Three stones in the Day-Date range share one marker arrangement and nothing else. Green aventurine on Everose, carnelian on yellow gold and pink opal on platinum and white gold are all 36mm dials, all set-only with no plain version anywhere in the model, and all three carry hour markers in gold settings with Roman numerals at six and nine also in gold and also set. No other ground in the range uses that arrangement. Each was assigned to the metal its color agrees with, none of them crosses to another, and the three together form a set that exists only when the references are laid side by side. This is the Everose member of it.
Aventurine is a quartz carrying platelets of mica or hematite suspended through the stone, and those inclusions are what produce the effect the material is known for. Light entering the stone reflects off the platelets at whatever angles they happen to sit, so the dial does not glow evenly but flashes at specific points that shift as the wrist moves, and the density of those flashes varies across the surface because the inclusions were never distributed evenly to begin with. The green is deep and cool, which on an Everose case creates the widest temperature separation available on this reference. Against that ground the gold settings and the Roman numerals at six and nine establish a fixed structure, giving the dial an axis and a rhythm that the stone itself refuses to supply. The bezel is set with diamonds around its full circumference, the case is 36mm in Everose gold with the wide flat lugs and low band the model uses throughout, and the President bracelet runs from the lugs in polished three-piece links. The orientation of the slice matters more with aventurine than with most stones. Because the platelets sit at fixed angles within the quartz, cutting the same block along a different plane produces a dial that flashes at different wrist positions, and there is no way to specify which. Two examples of this configuration will behave differently in the hand even though the specification is identical, and neither is the correct one. The stone also has to be cut thin enough to serve as a dial while keeping enough depth for the inclusions to sit at varying distances below the surface.
Cutting a calendar into aventurine creates a problem the flat grounds never face, and it has to do with the frames rather than the stone. The Day-Date requires two openings, a wide arc at twelve for the day written out in full and a window at three for the date, and both are fixed in position across the entire model. On a ground that flashes intermittently, the frames have to read as edges at every moment, including the moments when a group of platelets nearby is throwing light directly at the eye. They are therefore made more prominent than they would need to be on a lacquered dial, and the gold marker settings help by giving the frames company: the eye reads a dial with several fixed gold elements rather than two isolated ones. Both discs advance instantaneously at midnight rather than turning through the preceding hour. The movement runs roughly seventy hours off a full wind, and setting happens entirely through the crown, with no correctors cut into the case band. Eleven grounds are offered at this reference and the display beneath them never changes, so the difference between configurations is entirely in the surface and the markers. Aventurine takes the thirty-two-diamond hour markers with Roman numerals at six and nine, an arrangement shared here only with eisenkiesel.
Twelve grounds are offered on Everose at 36mm and seven of them exist on this metal alone: blue-green set, brown ombre in both its forms, eisenkiesel set, green aventurine set, rose set and slate set. Only white, mother-of-pearl set with diamonds and the paved dial travel to all four metals, with olive green and silver set reaching three. That makes Everose the most self-contained metal in the model after yellow gold, and its exclusives are almost all stones, which is the opposite of the yellow gold roster where the exclusives are mostly applied colors. Three references carry the Everose roster: 128235 with a fluted bezel, 128345RBR, which adds a diamond-set bracelet as a second axis, and this one, which takes the set bezel with the standard President and nothing further. The dials are identical across all three. The Everose exclusives are worth separating by how far they reach. Six of the seven are confined to 36mm as well as to the metal: blue-green, brown ombre in both its forms, aventurine, rose and slate. Eisenkiesel is the exception and travels to the 40mm case, which makes it the only Everose-locked ground offered at both sizes. That is a narrow distinction and a useful one, because it means a buyer settling on any of the other six has chosen a diameter at the same moment they chose a dial, without the two decisions ever being presented as joined. Aventurine is among them. There is no 40mm version of this watch and none on any other metal.
Green aventurine is bought for the stone and by people who already know what they are looking at, since the material rewards close attention and gives up very little in a photograph. The flashes need movement to appear at all, so a still image shows a flat green dial and the wrist shows something else entirely. That gap is a large part of the appeal for collectors who follow stone dials, and it is why aventurine tends to be described as underrated by the people who own one. On Everose the pairing is deliberate rather than convenient: green against rose gold is the sharpest temperature contrast the metal permits, and the gold numerals at six and nine are what stop that contrast from reading as a mismatch. For a collector working through the three references that carry this dial, the decision is only about the bezel and the bracelet, because the stone does not change.
