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Bulgari Diagono Magnesium: Standard Model and Chronograph Guide

The Bulgari Diagono Magnesium is a 41 mm automatic with a mixed-material case, ceramic bezel and lacquered finish. Here’s how it differs from the chronograph.
Estimate3–4 min Catalogued SpecialistWatchRanker Team
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The official name is Bulgari Diagono Magnesium—not “Diagiono.” The standard watch is a 41 mm automatic model with a steel, magnesium and PEEK case construction, ceramic bezel, lacquered dial and 42-hour power reserve. Its chronograph is a separate, larger 42 mm configuration, so its movement and water-resistance specifications should not be applied to the standard watch.

What the Bulgari Diagono Magnesium is

Bulgari introduced the Diagono Magnesium as a sports-style automatic watch distinguished by its combination of case materials and its textured lacquer finish. The 2015 US brochure and catalogue describe the standard model as 41 mm across, with a date display and a vulcanized-rubber strap. The catalogue lists four standard-model references: DG41C14SMCVD, DG41C16SMCVD, DG41C11SMCVD and DG41C13SMCVD. The exact reference matters when checking a particular watch, service records or replacement parts.

Bulgari’s 2015 US brochure and 2015 catalogue are historical product documents, not evidence of current stock, production status or pricing.

Standard Diagono Magnesium specifications

Specification Standard model
Case diameter 41 mm (Bulgari, 2015)
Case construction Steel, magnesium and PEEK, as described in Bulgari’s 2015 US brochure
Bezel Ceramic, engraved with the double Bulgari logo (Bulgari, 2015)
Movement Automatic mechanical; 28,800 vibrations per hour (4 Hz) (Bulgari, 2015)
Power reserve 42 hours (Bulgari, 2015; also listed by Fondation Haute Horlogerie)
Functions Hours, minutes, seconds and date (Bulgari, 2015; Fondation Haute Horlogerie)
Dial and case-middle finish Proprietary lacquer in anthracite, brown, blue or silver (Bulgari, 2015)
Strap Vulcanized rubber; the catalogue specifies an ardillon (pin) buckle (Bulgari, 2015)
Water resistance Not stated for the standard model in the cited product references

Materials and the Motorlac finish

“Magnesium” is part of the watch’s name, but the standard model is not described as a case made entirely of magnesium. Bulgari specifies a case construction involving steel, magnesium and PEEK, with a ceramic bezel. The Fondation Haute Horlogerie describes magnesium for the case and magnesium and PEEK for the case middle. These descriptions point to a mixed-material design rather than a single-material case.

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The lacquered surface is another defining detail. Bulgari lists anthracite, brown, blue and silver finishes on the case middle and matching dial; Fondation Haute Horlogerie calls the treatment Motorlac and describes it as a protective lacquer inspired by the automotive world, producing a textured appearance. Color alone is not a reliable way to identify a reference: check the reference number on the specific watch and confirm its details against documentation.

How the standard model differs from the chronograph

The Diagono Magnesium Chronograph is a distinct variant, not simply another dial option. Bulgari’s 2016 brochure describes a 42 mm case and an automatic B130 chronograph movement. The Fondation Haute Horlogerie profile lists 100 m water resistance for that chronograph. Those details do not establish the water resistance or movement designation of the 41 mm standard model.

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Feature Standard Diagono Magnesium Diagono Magnesium Chronograph
Case diameter 41 mm (Bulgari, 2015) 42 mm (Bulgari, 2016)
Movement Automatic mechanical; standard-model movement designation not stated in the cited references Automatic B130 chronograph movement (Bulgari, 2016)
Functions Time and date; seconds also listed by Fondation Haute Horlogerie Chronograph and date (Bulgari, 2016)
Power reserve 42 hours (Bulgari, 2015) 42 hours (Bulgari, 2016)
Water resistance Not stated in the cited standard-model references 100 m (Fondation Haute Horlogerie’s chronograph profile)
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What to check when buying a used example

The cited materials are historical specifications, not current listings or pricing guidance. For a used watch, treat the individual example—not a general model description—as the thing to verify.

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  • Reference: Ask for the exact reference and compare it with the four standard-model references if the watch is represented as the standard configuration.
  • Configuration: Confirm whether the watch is the 41 mm time-and-date model or the 42 mm chronograph. Do not assume that chronograph specifications apply to the standard model.
  • Condition and authenticity: Inspect the case, bezel, dial, crown and strap, and request available authenticity documentation. Have concerns assessed by a qualified watch professional.
  • Service history: Ask for dated service records and clarify which work was completed. The cited product references do not establish service intervals or costs.
  • Strap fit: Bulgari specifies a vulcanized-rubber strap, but the cited sources do not establish dimensions or compatibility across references. Confirm the exact reference and measurements before buying a replacement.
  • Seller terms: Review return rights, warranty coverage and the seller’s description of what is included before paying.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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