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How much gold in Sedna Speedmaster?

M
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Hello,

I am new to this forum but not new to Omega!

My first Omega was a Seamaster! Loved it very much and it was my first serious watch. Had to sell it as I needed money to get married.

My second Omegas was the SMP in sapphire. Loved the vintage style but end up selling it when the newer style SMP came and I loved the newer style bracelet.

Now I am back looking for another speedmaster!

This time, I am interested in the Sedna gold version. I tried it on and wow!!! The gold is a bit tone down, now as yellow as compare to say a YG Rolex Day Date. I love it!!

Question I have is, does anyone know how much gold is in a Sedna gold speedmaster? Has anyone weighted the bracelet by itself? Most of the gold I assume is in the bracelet and casing.

I am just trying to justify getting one with gold price at ATH….

Thank you! I will likely visit this forum a lots more from now on!
 
YY77
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Weight of the watch is indicated on Omega' site, question still remains how much 18k is actually in it considering transparant cashback, dial and movement.

Screenshot_20250501_130140_Chrome Beta.webp
 
Donn Chambers
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There isn’t enough gold in any modern gold watch to justify the high retail price. Even assuming early the entire weight is solid 18k gold (200g), that is only $15k and the retail price is $40+. Realistically, only half to 2/3 the weight is gold, so probably $7-9k in real gold value.

If you want a gold watch, always buy used. Prices drop like crazy (and are still over priced).
 
YY77
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Donn Chambers Donn Chambers
There isn’t enough gold in any modern gold watch to justify the high retail price. Even assuming early the entire weight is solid 18k gold (200g), that is only $15k and the retail price is $40+. Realistically, only half to 2/3 the weight is gold, so probably $7-9k in real gold value.

If you want a gold watch, always buy used. Prices drop like crazy (and are still over priced).
Because of the 50 years warranty and service included made the purchase of my Zenith A386 50th Revival a bargain.
 
Evitzee
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216 g total weight of Sedna model, 138 g total weight of SS sapphire model, so 78 g of 18k gold. Today's price for 18 k gold is $77/g, so about $6,000 of gold in the watch. You cannot justify the price of a precious metal watch, or jewelry, on the amount of gold or Pt in the item, luxury items aren't priced that way. Buy it if you like it, but don't try to justify it on the gold content.

That said, I have the SS/Sedna Speedmaster that I bought last year off of C24 at a really great price, BNIB complete. Great watch and just enough of a difference vs the steel model to make it interesting. You can definitely feel the extra weight of gold when handled next to a SS model. The all Sedna gold watch is beautiful, but you pay for the luxury. Only you can make that decision.

IMG_1578.webp IMG_1580.webp
Edited:
 
Annapolis
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Evitzee Evitzee
216 g total weight of Sedna model, 138 g total weight of SS sapphire model, so 78 g of 18k gold. Today's price for 18 k gold is $77/g, so about $6,000 of gold in the watch. You cannot justify the price of a precious metal watch, or jewelry, on the amount of gold or Pt in the item, luxury items aren't priced that way. Buy it if you like it, but don't try to justify it on the gold content.

That said, I have the SS/Sedna Speedmaster that I bought last year off of C24 at a really great price, BNIB complete. Great watch and just enough of a difference vs the steel model to make it interesting. You can definitely feel the extra weight of gold when handled next to a SS model. The all Sedna gold watch is beautiful, but you pay for the luxury. Only you can make that decision.

IMG_1578.webp IMG_1580.webp
I don’t think you can determine the gold content by subtracting the weight of the steel version.

That said, I do think that if you assume the movement and crystal weights are the same for each watch and you know the relative masses of each metal (like 18k gold is twice as massive as steel—I just made that up) and the total weights of each watch (as already stated), then you could come up with a pretty precise figure via simple math.

Just remember it’s 18k (75%) gold. But if it’s actual precious metal value you’re after, it’s worth researching the alloy content, as some of that remaining 25% is likely composed of other precious metals. So it can get a little complicated.

I’d guess it’s probably something on the order of $10k us in metal value. You should never pay more than 50% retail for a precious metal Omega. If what you care about is having gold, bullion is a much wiser choice! 😀
 
M
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Thanks for all of the response so far!

Yes, trying to justify the amount of gold used to make the watch is not going to help justify the cost but is still good to know before spending this kind of money.

Yes, I am aware that 18k gold means only 75% is pure gold.

Was hoping someone has a Sedna gold or moonshine gold and weight the band 😀. The band has majority of the gold. Case is next.
 
Annapolis
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Take it from someone who owned a precious metal omega for years: yes the bracelet and clasp comprise much of the weight, but the case is also quite massive.
 
M
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Evitzee Evitzee
216 g total weight of Sedna model, 138 g total weight of SS sapphire model, so 78 g of 18k gold. Today's price for 18 k gold is $77/g, so about $6,000 of gold in the watch. You cannot justify the price of a precious metal watch, or jewelry, on the amount of gold or Pt in the item, luxury items aren't priced that way. Buy it if you like it, but don't try to justify it on the gold content.

That said, I have the SS/Sedna Speedmaster that I bought last year off of C24 at a really great price, BNIB complete. Great watch and just enough of a difference vs the steel model to make it interesting. You can definitely feel the extra weight of gold when handled next to a SS model. The all Sedna gold watch is beautiful, but you pay for the luxury. Only you can make that decision.

IMG_1578.webp IMG_1580.webp
That’s a good way to know the difference between the SS version and the full Sedna Gold version!

78g of 18k would be 58.5 grams of pure gold.
 
M
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Annapolis Annapolis
Take it from someone who owned a precious metal omega for years: yes the bracelet and clasp comprise much of the weight, but the case is also quite massive.
Even better!!
 
Annapolis
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M mmbiker
That’s a good way to know the difference between the SS version and the full Sedna Gold version!

78g of 18k would be 58.5 grams of pure gold.
There’s way more than 78g of 18k gold in the watch—again, that math doesn’t work.

If you can find one of these preowned for around $25k usd it’s not a terrible prospect. But seriously: unless you have money to burn, do not buy at or anywhere near retail. You’ll never be able to sell it for close to that if you decide to move on. It’s not just that secondhand dealers will only offer you 30-40% of what you paid (if you’re lucky)—most of them won’t even make you an offer at all. Trust me—this is advice from experience.

The market for precious metal Omegas is very small. Most people who want gold watches want Rolexes and Pateks and Cartiers, not Omegas. Dealers don’t want these because they take forever to sell.

They’re beautiful. Seductive. The weight of them is so cool. But from a financial standpoint, just about the worst thing you could spend your money on. Buy a preowned Rolex Day Date instead—you’ll always be able to recoup your investment.
 
Annapolis
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Bobswatches has one (the Omega) for 28k and I bet you could negotiate that down quite a bit.
 
Annapolis
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And EuropeanWatch has the moonshine one for 29–again, probably negotiable.
 
Evitzee
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People are correct, there is way more than the gold content I calculated previously. Approach it another way, the piece weighs 216 g. What do the movement and crystals weigh? Subtract those items and the rest should be 18k gold. Say they weigh 16 g (just guessing), that leaves 200 g of 18 k gold, or 150 g of pure gold. 150 g x $105/g = approx $15,000 of gold max. Maybe somebody can chime in on what a 1861 or 3861 movement weighs, plus a sapphire crystal. It's an emotional purchase, don't get hung up on the amount of gold strapped to your wrist.
Edited:
 
w154
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If the numbers above are correct (for steel and gold), I guess you can solve it assuming that the volume of the case and bracelet are the same.

Steel watch = Steel Weight + The Rest
Gold watch = Gold Weight + The Rest

Steel watch = (Vol. x 7.86g/cm3) + R = 138g
Gold watch = (Vol. x 16.50g/cm3) + R = 216g

Bottom minus top gives

V x 8.64 = 78g

V = 9.03cm3

So in theory the steel watch has 71g of steel, the gold watch 149g of 18k, and the rest of both would be 67g. Seems high to me but I think the maths is right (?). I guess the crystals are heavy. I’ve just woken up, so that’s my excuse if it’s not.
 
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