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watchf · 7 May 2011, 10:38 PM

Does 18k gold mixture have to follow a certain standard as in there is a stipulated % of each metal to be used other than 75% YG?

I ask because I am curious if there is a difference between the 18k YG used in DD from 18038 to 18028 right up to the current 36mm 118238 and DD II 218238? If so what are the differences?

watchf · 8 May 2011, 12:28 PM

No one knows? Is it considered a company secret?

Onikage · 8 May 2011, 12:33 PM

There's definitely a difference in colour. So you can deduce that other than the obligatory 75% gold content there is a varying alloy mixture. Copper being the most apparent as the redness of the metal varies greatly. If it is a secret it's a prudent one on Rolexes part.

LinD · 2 December 2011, 11:53 PM

Today I took delivery of a brand new tt datejust. I've just noticed the difference in gold colour when compared to my older datejust (14 years old). The older yellow gold is much more yellowy and the gold on my new watch is much more orangey/reddish and quite different to the other gold jewellery I own.

padi56 · 3 December 2011, 12:00 AM

Quote:

Originally Posted by watchf

Does 18k gold mixture have to follow a certain standard as in there is a stipulated % of each metal to be used other than 75% YG?

I ask because I am curious if there is a difference between the 18k YG used in DD from 18038 to 18028 right up to the current 36mm 118238 and DD II 218238? If so what are the differences?

18Kt gold is 75% pure gold no matter what the other 25% of the alloys used.

LinD · 3 December 2011, 12:04 AM

Rolex have definitely changed the colour of it in the new two tone datejusts (not sure about other models). I wonder why? Maybe to reflect 'modern tastes' for more reddish-toned metals?

GerardoG · 3 December 2011, 03:43 AM

I agree. Newer YG is 'orangey' compared to bright yellow of other (older) models

7 May 2011, 10:38 PM	#1
watchf "TRF" Member Join Date: Feb 2011 Location: Australia Posts: 2,458	Different formula for YG from old to current? Does 18k gold mixture have to follow a certain standard as in there is a stipulated % of each metal to be used other than 75% YG? I ask because I am curious if there is a difference between the 18k YG used in DD from 18038 to 18028 right up to the current 36mm 118238 and DD II 218238? If so what are the differences?

8 May 2011, 12:33 PM	#3
Onikage "TRF" Member Join Date: Feb 2011 Location: England Watch: 16710, 16628 Posts: 7,757	There's definitely a difference in colour. So you can deduce that other than the obligatory 75% gold content there is a varying alloy mixture. Copper being the most apparent as the redness of the metal varies greatly. If it is a secret it's a prudent one on Rolexes part. __________________ GMT II 16710 TRADITIONAL ( D- Serial #) ROLEXFANBOY P-Club Member #4

8 May 2011, 12:28 PM	#2
watchf "TRF" Member Join Date: Feb 2011 Location: Australia Posts: 2,458	No one knows? Is it considered a company secret?

2 December 2011, 11:53 PM	#4
LinD "TRF" Member Join Date: Jun 2009 Real Name: Lindsay Location: England Watch: New Style DJ Posts: 66	Today I took delivery of a brand new tt datejust. I've just noticed the difference in gold colour when compared to my older datejust (14 years old). The older yellow gold is much more yellowy and the gold on my new watch is much more orangey/reddish and quite different to the other gold jewellery I own.

3 December 2011, 12:04 AM	#6
LinD "TRF" Member Join Date: Jun 2009 Real Name: Lindsay Location: England Watch: New Style DJ Posts: 66	Rolex have definitely changed the colour of it in the new two tone datejusts (not sure about other models). I wonder why? Maybe to reflect 'modern tastes' for more reddish-toned metals?

3 December 2011, 03:43 AM	#7
GerardoG Banned Join Date: Oct 2005 Real Name: Gerardo Location: Here Watch: ALL of them Posts: 32,098	I agree. Newer YG is 'orangey' compared to bright yellow of other (older) models

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