The Omega Speedmaster Professional Moonwatch, a legend in horology, is renowned for its robust design and enduring legacy. However, even within this iconic timepiece, subtle variations exist, notably in the choice of crystal material used to protect the dial. This article will delve into the differences between the Omega Speedmaster with Hesalite (plexiglass) and Sapphire crystals, addressing the "Omega Speedmaster Vetro Zaffiro o Esalite" question in detail. We'll explore their properties, advantages, disadvantages, and ultimately help you determine which crystal best suits your needs and preferences.
Differenza tra Omega Moonwatch Esalite e Zaffiro: A Comparative Analysis
The core difference lies in the material itself: Hesalite (also known as Plexiglass) and Sapphire. Both offer protection for the watch face, but their characteristics differ significantly, impacting durability, clarity, and overall aesthetic.
Hesalite (Plexiglass): The Original Moonwatch Crystal
Hesalite, the original crystal used on the Speedmaster Professional, holds a special place in the watch's history. Its use on the missions to the moon cemented its legacy as a vital component of the legendary timepiece. Hesalite is a type of acrylic plastic, offering several unique properties:
* Lightweight: Hesalite is significantly lighter than sapphire, contributing to the overall comfort and feel of the watch on the wrist. This is a considerable advantage for those who prefer a lighter timepiece.
* Scratch Resistance (Relative): While not as scratch-resistant as sapphire, Hesalite possesses a surprising degree of resilience. Minor scratches can often be buffed out with a specialized polishing compound, restoring the crystal's clarity. This repairability is a significant advantage over sapphire, which requires professional replacement if scratched.
* Impact Resistance: Hesalite is renowned for its superior impact resistance compared to sapphire. While sapphire is incredibly hard, it is also brittle and prone to shattering under significant impact. Hesalite, being more flexible, is better able to absorb shocks and withstand impacts without fracturing. This is a crucial factor for those who lead active lifestyles or are concerned about accidental damage. This resilience is a key reason why NASA continues to favor Hesalite for its space missions.
* Distinctive Appearance: Hesalite possesses a slightly warmer, more vintage aesthetic than sapphire. Its subtle curvature and tendency to slightly magnify the dial contribute to a unique charm appreciated by many collectors. The slight distortion also gives it a slightly softer, less clinical look.
* Cost-Effective: Hesalite is generally less expensive than sapphire, making it a more budget-friendly option for those seeking the iconic Speedmaster. This cost difference is often reflected in the overall price of the watch.
However, Hesalite also presents some disadvantages:
* Susceptibility to Scratches: While buffable, Hesalite is more prone to scratching than sapphire. Its softer nature means that it will accumulate scratches more readily over time, particularly with regular wear.
* Yellowing Over Time: Hesalite is susceptible to yellowing or discoloration over time, especially with prolonged exposure to ultraviolet (UV) light. This can significantly alter the appearance of the watch, although some find this aged patina aesthetically pleasing.
* Less Scratch Resistant than Sapphire: This is a critical point often overlooked. While the buffability is a plus, the fact remains that Hesalite will accumulate scratches more easily than sapphire.
Sapphire Crystal: Modern Clarity and Durability
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