The Many Hues of Omega Gold?

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Hi all,

I recently posted on the "C Case Constellation" thread, my 168.019 "pink" gold Constellation (Pics below).

Full disclosure: I love the watch, have no question as to its authenticity/provenance, but being recently retired perhaps I have too much time on my hands to think about trivial things.

Questions and/or opinions for the experts/afficianados on this forum:

"BB" Omega code indicates "rose" gold. That seems to encompass a wide range of gold/copper/silver alloy hues as opposed to specifically differentiating between say pink, rose and red. Did Omega or sub-contracted case manufactures have different alloy "recipes" over the years?

If true, and given Omega's proclivity for reference numbers for everything, shouldn't there be a reference for a specific "rose" gold alloy hue, e.g., 168.019 BB.0XX.1234.25 (half kidding/half serious).

Does age/patina come into play with 18k copper alloy gold?

Tried my best with phone camera in sunshine.

Look forward to any comments...

Dan

 
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I once bought an early 18k Genève, and the case appeared to be yellow gold, while the indices were rose colored. A simple hand polish completely changed the case, and it matched the indices.

So yes, "patina" can cause the color to change.
 
Posts
7
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15
Hi all,

I recently posted on the "C Case Constellation" thread, my 168.019 "pink" gold Constellation (Pics below).

Full disclosure: I love the watch, have no question as to its authenticity/provenance, but being recently retired perhaps I have too much time on my hands to think about trivial things.

Questions and/or opinions for the experts/afficianados on this forum:

"BB" Omega code indicates "rose" gold. That seems to encompass a wide range of gold/copper/silver alloy hues as opposed to specifically differentiating between say pink, rose and red. Did Omega or sub-contracted case manufactures have different alloy "recipes" over the years?

If true, and given Omega's proclivity for reference numbers for everything, shouldn't there be a reference for a specific "rose" gold alloy hue, e.g., 168.019 BB.0XX.1234.25 (half kidding/half serious).

Does age/patina come into play with 18k copper alloy gold?

Tried my best with phone camera in sunshine.

Look forward to any comments...

Dan

And just to clarify - I'm only using this watch as an example.

More interested in the "color palette of gold" (yellow to red) and why the Omega "BB" designation seems to encompass anything and everything in between as rose gold.

Hopefully that makes more sense?

Dan
 
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I once bought an early 18k Genève, and the case appeared to be yellow gold, while the indices were rose colored. A simple hand polish completely changed the case, and it matched the indices.

So yes, "patina" can cause the color to change.
Thanks Tony!
 
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There's definitely different case makers and different colours in different regions, I doubt they were saying it must be exactly this metallurgy, more likely they specified it must be pink gold, 18 karat. As @Tony C. mentions, patina does make a big difference, one of my Seamasters currently is rainbow coloured, like a titanium exhaust kind of pattern and it was 14K bright white-ish yellow gold 10 years ago. I like the rainbow patina too much to clean it off.
 
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A rule of thumb:

yellow gold patinates to darker colours with rose/red/ rainbow hues
pink/rose gold does the opposite - it patinates to yellow hues, often misleading.
I once bought an 18K SM with rare 7077 bracelet at auction which was descibed as 18K yellow gold - and when it arrived my joy was great when it turned out to be rose gold...
18K pink/rose gold does not show great variance in colours but 14K does
14K pink/rose tends to be darker reddish and shows more colour variance
 
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My 18k 320 2872 is most definitely 'pink' but has 'faded' to a very subtle colour that looks more like yellow gold at first glance.
Whilst at the same time my 18k yellow gold 14382 deluxe (which was unmistakably yellow when purchased) has taken on a much deeper rich patina that could be mistaken for pink.

I don’t have a current pic of the Constellation but here is the 2872, looking quite yellow.



side by side with a 14k yellow gold dogleg and the 18k deluxe constellation the 2872 was unmistakably pink.


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