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 the Hemicube dial have any markers, numerals, or a logo?

None. No applied or printed indices, no numerals, no logo, no text. The three-dimensional cube field is the entire design — a clean, uninterrupted surface. Your choice of hands does the timekeeping.

Does the Hemicube dial have lume?

No — the dial carries no lume, since there are no markers to lume. If you want the watch to glow at night, that comes from your hands: pair the dial with a lumed hand set. The dial itself stays a pure textured surface.

Which movement does the Hemicube dial need?

It depends on the version. The No Date Hemicube is broadly compatible — it fits 7S26, 7S36, 4R15, 4R35, 6R15, NE15, NH25, NH26, NH35, NH36, NH38 and NH39, and ships with four dial feet so it can seat on either a 3 o’clock or a 4 o’clock crown (clip the two feet you don’t need). The Open Heart version is different: it is cut for the open-heart NH family only — NH38, NH70, NH71, NH72 — on a 3 o’clock layout. Check the version you’re buying.

What is the Open Heart version of the Hemicube?

The Open Heart Hemicube has an aperture 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. It is designed around the open-heart NH family (NH38, NH70, NH71, NH72), whose balance the opening is shaped to reveal. Like the No Date version it carries no markers, numerals or logo; the difference is the open view at the centre.

Does the Open Heart fit the same way as the No Date version?

No. The No Date version has four dial feet and seats on a broad range of 3 o’clock and 4 o’clock movements — you clip the two feet you don’t need. The Open Heart version is matched directly to the open-heart NH38-family layout (NH38, NH70, NH71, NH72), with its aperture positioned to frame the exposed balance; there is no clip-the-feet step. It is not intended for closed-dial movements like the NH35 / NH36 — choose the No Date Hemicube for those.

Will this dial fit my case?

Yes, almost certainly. This is a standard 28.5mm dial — the industry-standard size for Seiko mod builds. It fits any case designed for a 28.5mm dial, whether that's a Bauhaus 33, an SKX013, or another aftermarket case. The matched case shown with a dial is an aesthetic pairing, not a fitment requirement.

Does it work with normal or ultra thin chapter rings?

Both. All our SKX013 chapter rings — normal and ultra thin — clear the dial. Choose by your case's clearance, not the dial.

Is this a limited edition — will it be restocked?

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