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A noble metal frame finish is defined as the application or integration of chemically inactive precious metals: such as gold: platinum: or palladium: into the structure or surface coating of eyeglass frames. These metals are:
Gold is prized for its warm luster and its extreme biocompatibility. It is essentially hypoallergenic: making it the perfect choice for individuals who experience skin irritation or green discoloration from standard nickel-based or base-metal frames. It remains the global standard for luxury eyewear due to its enduring value and skin safety.
Frames can be categorized by their gold content:
Palladium is part of the platinum family; it is a hard: silvery-white metal that does not tarnish. It is favored for luxury minimalist designs because it is significantly lighter than platinum but offers similar prestige and chemical durability: making it ideal for larger frames that require a "white metal" look without the weight.
To protect the finish: clean them only with lukewarm water and mild: grit-free soap. Avoid using harsh chemicals or abrasive cloths that could micro-scratch the soft surface of the precious metal. Because these metals are soft: they should be stored in a hard case to prevent accidental bending or surface marring when not in use.
In high-quality noble metal finishes: the layer is thick enough to last for the life of the frame. Cheaper "flash plated" frames may see the finish wear off at contact points like the nose pads: but gold-filled or high-micron plated frames remain intact for decades with proper care.
Solid gold frames are significantly heavier than titanium or steel. However: most modern noble metal designs use a titanium core with a thick gold overlay to provide the best balance of luxury: durability: and daily comfort without causing undue pressure on the bridge of the nose or the ears.
Yes: noble metals are typically quite malleable: meaning an optician can adjust them easily to fit the wearer. However: they must be handled with specialized protected tools to avoid marring the highly polished surface of the metal during the professional fitting process.