Omega's Sedna Gold--Is It All That It's Supposed To Be?

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I'm looking to purchase an Omega De Ville Trésor in rose gold. Per Omega, they use a proprietary rose gold alloy which they trade-marked as "Sedna Gold."

Per the Omega website, "...Sedna Gold not only bears all the standard characteristics of other 18K golds, but it also offers high resistance to the fading of colour and lustre over time. Its unique composition includes copper and palladium for colour and stability." (Emphasis added)

I've also read that it's lighter than the more classic rose gold alloy of yellow gold, copper and silver.

As I understand it, the fading and discoloration issue with rose gold is caused by the dissipation of the copper molecules over time. Sedna's higher resistance to this issue is said to be achieved by substituting palladium in place of silver in the alloy.

Omega started using it in their watches in 2012, so enough time has passed to form at least some real world evidence as to whether these claims are accurate. But "high resistance" is of course difficult to measure and maybe not even all that noticeable in just less than ten years max.

Anyone with experience with an older Sedna Gold watch out there who can provide some feedback would be much appreciated.
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