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Tech · 26 August 2016, 01:01 AM

Why is the president clasp of ladies and mens 18k are turning into pink color and also the screws of it?what are this parts made of?is there any combination of other metal to make it like the rosegold?

michigan.watches · 26 August 2016, 02:39 AM

The clasps and screws are made of 18k rose gold. It's the way they left the factory.

Assquatch · 26 August 2016, 10:54 AM

They are alloyed with copper to make them stronger and more springy.

cardstock · 5 September 2016, 03:10 PM

Chemicals can change the oxidation state of the metals used to alloy with gold. Copper for example is very dependent upon acids, oxidizers (peroxide, Clorox) and even the sodium in some soaps. It can change color quite a bit from turning 18k gold into slightly pink or green, or even nearly white.

Cleaning a watch should only be done with clear, preferably distilled water and a drop of normal dishwashing liquid.

Franc

Highendtime · 6 September 2016, 01:45 AM

I had a similar issue on a 116528 (bezel) which used to turn into a reddish pinkish colour - took it to the RSC in London and after writing them a harsh letter, the bezel was replaced.

I've had a few 116528's since then but it only ever happened on that one. As others have said above - this may be standard for the president but you can always take it in if it bothers you.

Hope it helps.

joli160 · 9 September 2016, 03:51 AM

Quote:

Originally Posted by michigan.watches

The clasps and screws are made of 18k rose gold. It's the way they left the factory.

X2

26 August 2016, 01:01 AM	#1
Tech "TRF" Member Join Date: Oct 2010 Location: Phil Posts: 1	Rolex president clasp discolored? Why is the president clasp of ladies and mens 18k are turning into pink color and also the screws of it?what are this parts made of?is there any combination of other metal to make it like the rosegold?

26 August 2016, 02:39 AM	#2
michigan.watches "TRF" Member Join Date: Jan 2014 Location: Metro Detroit Posts: 586	The clasps and screws are made of 18k rose gold. It's the way they left the factory.

26 August 2016, 10:54 AM	#3
Assquatch "TRF" Member Join Date: Nov 2011 Real Name: Dave Location: Washington, USA Watch: Rolex 1675 Posts: 134	They are alloyed with copper to make them stronger and more springy.

5 September 2016, 03:10 PM	#4
cardstock "TRF" Member Join Date: Aug 2015 Real Name: Franc Location: USA Watch: Daytona Posts: 100	Chemicals can change the oxidation state of the metals used to alloy with gold. Copper for example is very dependent upon acids, oxidizers (peroxide, Clorox) and even the sodium in some soaps. It can change color quite a bit from turning 18k gold into slightly pink or green, or even nearly white. Cleaning a watch should only be done with clear, preferably distilled water and a drop of normal dishwashing liquid. Franc

6 September 2016, 01:45 AM	#5
Highendtime 2024 Pledge Member Join Date: Aug 2016 Location: Hong Kong Watch: Patek Nautilus Posts: 535	I had a similar issue on a 116528 (bezel) which used to turn into a reddish pinkish colour - took it to the RSC in London and after writing them a harsh letter, the bezel was replaced. I've had a few 116528's since then but it only ever happened on that one. As others have said above - this may be standard for the president but you can always take it in if it bothers you. Hope it helps.

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