We worked with our dial makers to do something many said was impossible: slicing natural gemstones down to just 0.6mm. But the real challenge was the structural “sandwich” beneath it. Each dial is composed of:
To keep this 1.0mm sandwich perfectly secure, all three layers are bolted together by two horizontal smooth domed-head bolts at the 3 and 9 o’clock positions. I specifically chose smooth domed heads instead of traditional screws for a reason: I didn’t want the “messy” look of misaligned screw slots. These custom bolts ensure the structure is rock-solid while keeping the visual focus entirely on the stone itself.
Center 3-Hand Configuration
To honor the purity of the stones, these models feature a clean center three-hand layout, allowing the light to travel across the dial without interruption. When you step into the dark, the 0.2mm layer of lume underneath shines through the 0.6mm gemstone, revealing the natural grain and “veins” of the stone.
A true rarity in the mineral world, Purple Jade (often known as Lavender Jade) offers a unique optical journey. In direct light, it presents a delicate, pinkish Wisteria hue that feels soft and romantic. However, beneath this surface lies a dense mineral structure that reacts beautifully to the hidden lume layer. When the sun sets, this “pinkish” stone undergoes a dramatic transformation, revealing a deep, distinct bluish lume that is slightly different in tone and intensity than its green counterpart.
The Quantra operates on an automatic movement featuring a micro-rotor. Its transparent case back and the positioning of the oscillating weight at the same level as other components unveil the watch’s inner workings, providing a captivating view of the gears in motion. The micro-rotor movement is regulated in-house to +/- 7 seconds and upgraded with blue screws and custom ALCADUS rotor.
The 36mm stainless steel case features a highly polished bezel, vertically brushed finish on the lugs, and sandblasted finish on the CNC-machined recessed center portion.
A polished tapered chamfer along the lug shoulder adds a touch of sophistication to this watch.
A hallmark of distinction across all ALCADUS models, the Quantra proudly boasts box-shaped crystals that extend beyond the case edge, a notable enhancement over the previously prevalent plexiglass (acrylic glass) susceptible to scratches.
Moreover, our sapphire crystal undergoes a meticulous process, receiving 5 layers of Anti-Reflective coating on its inner side to enhance clarity and legibility. This thoughtful treatment ensures optimal visibility without compromising its integrity, as applying the coating to both sides can risk scratching.
The watch case also features a 800 HV scratch-resistant coating and an anti-finger print coating to preserve the pristine beauty of your timepiece.
Crafting a dial from authentic mineral ore is a journey of precision and “best-effort” color matching. To achieve our signature aesthetic, we follow a strict technical process:
Gemstone Type, Not a Color Code: You are choosing a Gemstone Type (Green Jade, Purple Jade, or Yellow Mellite). Because we use various natural ores – not a single rock- no two watches will be identical in color intensity or veining.
The “Pastel” Evolution: We cut every gemstone to a translucent 0.6mm and lay it over a white BGW-9 Super-LumiNova® base. This creates an “inner light” that makes the final dial appear more pastel and lighter than the raw ore.
Our Quality Commitment: A single gemstone block contains different patterns depending on where it is sliced. While we cannot guarantee an exact color match to prototypes, we meticulously hand-select stones of similar shades and guarantee the structural integrity of your watch.
QC Standard: Every production dial is inspected to be free of cracks and perfectly bonded. You receive a watch that is technically perfect and geologically unique.
The leather strap, often overlooked by many brands, is a crucial detail for ALCADUS. It’s an essential part of the puzzle, embodying craftsmanship, durability, tradition, comfort, and quality.
To meet these criteria, we use Epsom leathers from Tanneries Haas (owned by the Chanel group) in France, which is the supplier to major luxury brands. Tanneries Haas in France has been tanning leather since 1842 and is famous for their premium leathers.
Every single one of our watch straps is meticulously crafted by hand, employing traditional leathercraft techniques. Each strap is cut, saddle-stitched and burnished by hand, guaranteeing longevity and ensuring that your strap is a timeless piece built to last a lifetime.
The inner lining is made from smooth Zermatt leather from Tanneries HAAS in France, the same type of lining commonly found in Hermès bags.
Comes with a 16mm high polished buckle.
The Quantra also pairs well with our signature Italy Nubuck Leather Strap
Each ALCADUS watch is a testament to meticulous hand finishing and assembly. We are confident you’ll fall in love with our watches; however, if you find yourself less than 100% satisfied within 30 days of purchase, simply return them in their original, unworn condition for a full, no-quibble refund or exchange.
We understand the desire to preserve the pristine beauty of your timepiece, which is why every ALCADUS watch features a special 800 HV scratch-resistant coating.
Adding an extra layer of assurance, we proudly present our industry-first 4-year Worry-Free Guarantee. Beyond covering mechanical faults of the watch movement, this comprehensive guarantee offers a 1 (one) time complimentary watch case replacement for any damage (within 48-month warranty period)—whether from daily wear or an unexpected accident—ensuring your complete peace of mind. This covers any form of mechanical fault of the movement and we will arrange a repair free of charge.
More details can be found here.
Case Material:
316L Stainless Steel with anti-scratch and anti-fingerprint coating
Case Dimensions:
36mm
Lug to Lug:
44mm
Thickness:
10.5mm (including crystal)
Lug Width:
20mm
Glass:
Box Sapphire Crystal (with 5 layers of inner clear AR coating)
Movement:
Decorated automatic Hangzhou Calibre 5100A (regulated)
Power Reserve:
42 hours
Crown:
Push-Pull
Water Resistance:
50 meters / 5 ATM / 160 ft
Strap Options:
French Epsom Straps, Italian Nubuck Straps, 5-link Stainless Steel Bracelet
“A little late to be the watch of the summer in 2026, but perfect for when the spring rolls around in 2027.”
“The Alcadus Quantra Type 01 and Type 02 are impressive watches that punch well above their weight class.”
“The Quantra offers remarkable craftsmanship and attention to detail, providing a refined aesthetic akin to Grand Seiko but at a more affordable price.”
“ALCADUS creates elegant, premium watches with meticulous hand-finishing, making exceptional craftsmanship accessible to all.”
