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Patek Philippe

About the weight of a platinum watch:

 

Moderator Mark is thinking about 5960 and the weight of the watch.


Let's have a closer look.

Here is 5960A with WG clasp and a bespoke strap.





And the same in platinum; clasp made of platinum and same length of strap.






Platinum is heavier like we all know. But what about platinum vs. gold?







Yellow gold






White gold






And rose gold







Let's have a closer look at the densities of different metals:

- Platinum 21.4 (21.4 g per cubic cm)
- Gold 19.3
- Stainless steel 7.9

However, the platinum used for watches is 95% platinum while gold is just 75% gold. The three different golds have a bit different density because of those 25% of different metals. White gold with palladium is a bit heavier than either yellow or rose gold.

The density of 950 platinum is about 20.34 while 750 gold is in average 15.3. This means that the density of platinum used in watches is about 36% higher than the one of gold. At the same time the density of gold is some 94% higher than the one of steel.

Now comes the interesting part.

Yesterday platinum was 30.91 EUR / g while gold was 38.24 EUR / g. If we forget the value of other metals in the mixture, 950 platinum was € 29.36 per gram and  750 gold € 28.68 per gram. The case of 5960 requires about 60 grams of platinum and 38.4 grams of gold. In other words the raw materials cost of a platinum watch are some € 660 higher than the same of a gold watch...

To Mark: A 5960G would be just some 20-25 grams lighter than the platinum brother. The difference is not really remarkable.

Best, Kari

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