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RRGHOST1 · 15 August 2010, 06:47 AM

I know this seems a stupid question to some, but can somebody tell me what gold is. Everyone knows gold as a yellow precious metal,but what makes white gold. Is white gold the same as yellow but with something added. whoever made it first, why didn't they call it by some other name ? Yes i know, inventing Green in Blackadder does spring to mind here.

The GMT Master · 15 August 2010, 07:04 AM

Well, pure gold (24 carat) is pretty useless as a metal as it's just too soft. That's why it's alloyed - for your standard yellow gold, silver and copper are mixed in to the alloy, making it a bit harder, and easier to use.

Now, for white gold, in jewellery at least, there are two general compositions - the addition of palladium and silver, and nicker, copper and zinc. In rings, for example, this is then rhodium plated to give a pure white colour. Rolex, however, uses a slightly different composition, using platinum as a colour fixing agent, meaning that Rolex WG watches never lose that pure white colour

ParisDakarBmw · 15 August 2010, 07:10 AM

Quote:

Originally Posted by The GMT Master

Well, pure gold (24 carat) is pretty useless as a metal as it's just too soft. That's why it's alloyed - for your standard yellow gold, silver and copper are mixed in to the alloy, making it a bit harder, and easier to use.

Now, for white gold, in jewellery at least, there are two general compositions - the addition of palladium and silver, and nicker, copper and zinc. In rings, for example, this is then rhodium plated to give a pure white colour. Rolex, however, uses a slightly different composition, using platinum as a colour fixing agent, meaning that Rolex WG watches never lose that pure white colour

100% correct

10 karat gold 42.5% gold

14 karat gold 58.5% gold

18 karat gold 75% gold

No matter what color, the karat is the same. The alloys may change the color, but there is the same amount of pure gold.

RRGHOST1 · 15 August 2010, 07:11 AM

Thanx for the info Chris.

RRGHOST1 · 15 August 2010, 07:23 AM

Oh and Paul. I had a GMT 14k TT i bought in '85. Now i know the difference. Good info.

ParisDakarBmw · 15 August 2010, 07:38 AM

No problem. It's easy to figure the value of the gold as well.

daily gold spot price (www.kitco.com) x what karat gold ie (.425, .585, .750) devided by the grams per oz (31.1).

then multiply the amount of grams times the gold price.

example. say you have 10 grams of 14k gold

gold today $1,215 per pure ounce

$1,215 times .585 (percent of actual gold in 14k) = $710.77 per ounce of 14k

$710.77 devided by 31.1 grams per ounce = $22.85 per gram of 14k gold

$22.85 times 10 grams = $228.54

sturgeon123456 · 15 August 2010, 07:56 AM

Quote:

Originally Posted by ParisDakarBmw

100% correct

10 karat gold 42.5% gold

14 karat gold 58.5% gold

18 karat gold 75% gold

No matter what color, the karat is the same. The alloys may change the color, but there is the same amount of pure gold.

I hate to be a knob but 10k is only 41.7% pure, hence you will sometimes see the 417 stamp rather than 14k, you will never see a 425 stamp.....

Joey_V · 15 August 2010, 08:48 AM

Rolex WG never lose the white?

Really?

Ebruner · 15 August 2010, 08:52 AM

Quote:

Originally Posted by ParisDakarBmw

100% correct

10 karat gold 42.5% gold

14 karat gold 58.5% gold

18 karat gold 75% gold

No matter what color, the karat is the same. The alloys may change the color, but there is the same amount of pure gold.

10k is 41.7% not 42.5%.

-Eddie

EchoBlueUK · 15 August 2010, 08:58 AM

And what's platinum?

rfknauss · 15 August 2010, 09:05 AM

Quote:

Originally Posted by EchoBlueUK

And what's platinum?

Here is some info on platinum.

http://www.gold-eagle.com/analysis/platinum.html

wehttaM · 15 August 2010, 09:05 AM

Uh... Platinum is a precious metal- that is I am assuming soft like gold. That is why it alloyed with platiniridium. It is a rare metal found in the earth.

wehttaM · 15 August 2010, 09:06 AM

Quote:

Originally Posted by rfknauss

Here is some info on platinum.

http://www.gold-eagle.com/analysis/platinum.html

Better than what i said.

SCD · 15 August 2010, 10:35 AM

Quote:

Originally Posted by Joey_V

Rolex WG never lose the white?

Really?

Really. It's all the same color through and through and it will stay that way.

SCD · 15 August 2010, 10:36 AM

woops

pradeep · 15 August 2010, 02:09 PM

Platinum should be tougher than 18K gold

ParisDakarBmw · 15 August 2010, 02:19 PM

Quote:

Originally Posted by Ebruner

10k is 41.7% not 42.5%.

-Eddie

Brain fart!

Good catch.

I don't know where 42.5 came from!

My bad

DCgator · 15 August 2010, 02:52 PM

All good info. Thanks all!

15 August 2010, 06:47 AM	#1
RRGHOST1 "TRF" Member Join Date: Dec 2009 Real Name: luke standing Location: england Watch: Rolex TT SubC Blue Posts: 3,997	Gold.........YG/WG I know this seems a stupid question to some, but can somebody tell me what gold is. Everyone knows gold as a yellow precious metal,but what makes white gold. Is white gold the same as yellow but with something added. whoever made it first, why didn't they call it by some other name ? Yes i know, inventing Green in Blackadder does spring to mind here.

15 August 2010, 08:48 AM	#8
Joey_V "TRF" Member Join Date: Jan 2008 Real Name: Joey Location: Dallas, TX Watch: SS Sub 16610 M Posts: 3,824	Rolex WG never lose the white? Really? __________________ Current Rotation: Rolex Submariner Date (M) - 1/08, Rolex Milgauss GV (V) - 2/10, Rolex SS Black Daytona (V) - 6/10, Rolex GMTIIC (G) - 5/11, TAG Heuer Silverstone (286/1860) - 1/2015 Former-watches: Omega PO/2535.80/2254, TAG Carrera/F1x2/Monaco, Panerai 312K/292L Wish List: Panerai 270/505, Rolex SMURF, Rolex RG Daytona, Rolex DSSD

15 August 2010, 07:04 AM	#2
The GMT Master "TRF" Member Join Date: Jul 2008 Real Name: Chris Location: England Posts: 8,150	Well, pure gold (24 carat) is pretty useless as a metal as it's just too soft. That's why it's alloyed - for your standard yellow gold, silver and copper are mixed in to the alloy, making it a bit harder, and easier to use. Now, for white gold, in jewellery at least, there are two general compositions - the addition of palladium and silver, and nicker, copper and zinc. In rings, for example, this is then rhodium plated to give a pure white colour. Rolex, however, uses a slightly different composition, using platinum as a colour fixing agent, meaning that Rolex WG watches never lose that pure white colour

15 August 2010, 07:11 AM	#4
RRGHOST1 "TRF" Member Join Date: Dec 2009 Real Name: luke standing Location: england Watch: Rolex TT SubC Blue Posts: 3,997	Thanx for the info Chris.

15 August 2010, 07:23 AM	#5
RRGHOST1 "TRF" Member Join Date: Dec 2009 Real Name: luke standing Location: england Watch: Rolex TT SubC Blue Posts: 3,997	Oh and Paul. I had a GMT 14k TT i bought in '85. Now i know the difference. Good info.

15 August 2010, 07:38 AM	#6
ParisDakarBmw Banned Join Date: Dec 2009 Real Name: Paul Location: New Haven, CT Watch: 116610 Sub-C Posts: 6,552	No problem. It's easy to figure the value of the gold as well. daily gold spot price (www.kitco.com) x what karat gold ie (.425, .585, .750) devided by the grams per oz (31.1). then multiply the amount of grams times the gold price. example. say you have 10 grams of 14k gold gold today $1,215 per pure ounce $1,215 times .585 (percent of actual gold in 14k) = $710.77 per ounce of 14k $710.77 devided by 31.1 grams per ounce = $22.85 per gram of 14k gold $22.85 times 10 grams = $228.54

15 August 2010, 08:58 AM	#10
EchoBlueUK "TRF" Member Join Date: May 2009 Location: UK Posts: 1,543	And what's platinum?

15 August 2010, 09:05 AM	#12
wehttaM "TRF" Member Join Date: Apr 2009 Location: USA Posts: 557	Uh... Platinum is a precious metal- that is I am assuming soft like gold. That is why it alloyed with platiniridium. It is a rare metal found in the earth.

15 August 2010, 10:36 AM	#15
SCD "TRF" Member Join Date: Nov 2009 Location: SF Bay Area, CA Posts: 511	woops

15 August 2010, 02:09 PM	#16
pradeep "TRF" Member Join Date: Jul 2010 Real Name: Pradeep Location: In a crazy world! Watch: Rolex Day Dates Posts: 265	Platinum should be tougher than 18K gold

15 August 2010, 02:52 PM	#18
DCgator "TRF" Member Join Date: Jul 2010 Location: PNW Watch: DS,BLNR,SubLV,DJ2 Posts: 8,123	All good info. Thanks all!

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