Hemicube Dial (Open Heart)

Name: Hemicube Dial (Open Heart)
Brand: Lucius Atelier
SKU: HCD-OH
Price: 77.0 SGD
Availability: InStock

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$77 SGD

LIMITED EDITION · 100 pieces only. Once this run sells out, this dial is retired for good — never remade.

Hemicube Guilloché Dial. Sandblast Ruthenium. Open Heart.

True guilloché is engraved on a rose-engine lathe by a handful of master craftsmen, and a single dial can run from roughly a thousand to tens of thousands of dollars — the technique is all but monopolised by luxury houses. We wanted that hand-engraved depth without the hand-engraved price.

So we recreated the look of guilloché: a repeating field of three-dimensional cubes — the hemicube — built from a precision sandblast texture that plays with depth, light and shadow. The illusion of carved geometry, at a fraction of the cost.

This is the open heart version: an aperture is cut into the cube field to frame the exposed balance wheel of your movement, so the beating heart of the watch shows through the geometry. No logo, no indices — just the cube pattern and the open view, in cool Ruthenium Silver.

A numbered run of 100.
Want the full closed cube face instead? See the No Date Hemicube, or Browse the dials collection .

A guilloché illusion.
A repeating three-dimensional cube field that reads as carved depth — the look of rose-engine guilloché, reproduced in a precision texture rather than hand-engraved.

An open heart.
An aperture in the cube field frames the exposed balance wheel of the open-heart NH38 family — the movement’s motion on full display, wrapped by the geometry.

Sandblast Ruthenium.
A matte, non-reflective sandblast finish in cool Ruthenium Silver. The cubes draw their depth from shadow, shifting as light moves across the dial — no markers, no logo, no text.

Choose your Hemicube dial

Version	Layout	Movements	Run
Hemicube Dial (Open Heart) — you’re viewing	Open-heart balance aperture	NH38 / NH70 / NH71 / NH72	100 pieces
Hemicube Dial (No Date)	Closed cube face, no date	3 & 4 o’clock NH / 4R / 7S	200 pieces

Heads up — a dial is one part of the build

Hands. A dial needs a matching set of hands to tell time. This is a non-lume dial, so it pairs with any set of hands you like — for a night-time glow, choose lumed hands, since the dial itself carries no lume.

Movement. The Open Heart Hemicube is cut for the open-heart NH family — NH38, NH70, NH71, NH72 — whose exposed balance the aperture is shaped to frame. It is a 3 o’clock layout, matched to those calibres directly (no clip-the-feet step). Closed-dial movements like the NH35 / NH36 belong with the No Date version.

Specs
What's Included
Recommended
How To Mod

Dimensions
1. Dial Diameter 28.5mm
Materials & Finish
1. Quality Swiss Production Quality, ISO 9001 Certified
2. Surface Finish Sandblast effect (matte)
3. Surface Colour Ruthenium Silver
4. Pattern Three-dimensional hemicube — a guilloché-inspired cube field with an open-heart aperture
5. Markers None — no applied or printed indices, numerals or logo
6. Lume None
Compatibility
1. Dial Type Open heart (exposed-balance aperture)
2. Movements NH38, NH70, NH71, NH72 (open-heart family only)
3. Crown Position 3 o’clock — matched to the open-heart layout
4. Hands NH movement compatible (sold separately)
1. 1x Watch Dial — Hemicube, Open Heart
All photos of watches with modification parts are for illustration purposes only and are not included with the dial purchase.
Recommended mods with:
1. A Complete Guide On How To Mod Your SEIKO Watch Dial And Hands (Photos & Video)
2. Seiko Modding: The Complete Build Guide

Is the Hemicube a real guilloché dial?

No — and we’re upfront about that. True guilloché is cut by hand on a rose-engine lathe, and a single dial can cost anywhere from around a thousand to tens of thousands of dollars, because only a handful of master engravers still do it. The Hemicube reproduces the look of guilloché — a repeating three-dimensional cube field that plays with depth, light and shadow — using a precision sandblast-textured pattern instead. You get the hand-engraved illusion at a tiny fraction of the cost.

What finish and colour is the Hemicube dial?

A sandblast-textured surface in Ruthenium Silver. The sandblast finish is matte and non-reflective, which is exactly what makes the 3D cube pattern read — the depth comes from shadow, not gloss. The ruthenium tone is a cool, gunmetal-leaning silver that shifts subtly as light moves across the cubes.

Does this dial have any markers?

No — it's a fully sterile dial. No applied or printed hour indices, no numerals, no minute track, no logo, and no "Automatic" text — just a clean, uninterrupted surface. Your choice of hands does the timekeeping, and the blank face also makes an ideal base for your own design.

Does this dial have lume?

No — this dial carries no lume. If you want the watch to glow in the dark, pair it with a set of lumed hands; the glow then comes from the hands rather than the dial face.

What is an open-heart dial / which movement does it need?

An open-heart dial has an aperture cut into the face to reveal the movement's balance wheel — the beating heart of the watch — through the dial. It's built for the open-heart NH family on a 3 o'clock crown: the Seiko NH38 (the NH70, NH71 and NH72 fit too), whose balance the opening is positioned to frame. Because it's matched to that one family, the dial comes with two feet already in position — nothing to clip.

Will this dial fit my case?

Yes, almost certainly. This is a standard Seiko mod dial — 28.5mm in diameter and 0.4mm thick, the industry-standard size — so it fits most, if not all, Seiko cases. Where a dial is shown with a particular case, that's an aesthetic pairing, not a fitment requirement. If you're unsure, the surest check is to remove your current dial and measure it with a vernier caliper.

Does this dial work with a normal or an ultra thin chapter ring?

Both our normal and ultra thin chapter rings fit this dial. Where a dial has applied (raised) indices, they sit within the clearance of either ring — so the choice is purely about looks: the ultra thin chapter ring sits low and discreet, while the normal sits a little more pronounced. Pick whichever suits your style.

Is this a limited edition / will it be restocked?

Yes, it's a limited edition, and it won't be restocked. Once the run sells out it's retired for good. The edition size is shown on the product page.

Are hands included with this dial?

No — dials and hands are sold separately. This listing is for the dial only; choose a matching handset to complete the build. If your dial is lumed, pairing it with lumed hands in the same lume type keeps the whole face glowing together.