10k gold? 9k gold? What's that about?

posted 3 years ago in Rings
Post # 3
Member
1649 posts
Bumble bee
  • Wedding: August 2015

I have a 10K white gold promise ring from about three years ago and it’s lasted better than my 14K white gold e ring. Far less scratches and definitely stronger. I think any ring 9K or under isn’t allowed to be called “gold” in the US, mainly because there isn’t enough gold in it.

Post # 4
Member
2537 posts
Sugar bee
  • Wedding: November 2013

My Fiance purchased his wedding band from an Australian vendor and it’s 9k.  We chose it based on price, it matched his vision in terms of style, and it’s much stronger than 14k or 18k (which is what I have).

Edit: For some reason, aussies know two-tone rings.  We could not find very many yellow and white gold combined rings in the States.  Most of them were titanium or tungsten. 

Post # 5
Member
552 posts
Busy bee
  • Wedding: June 2014

The reason that they’re not very yellow is that they have a lower gold content. Pure gold is 24K, so the lower the number, the less gold there is. So 10K gold is 10 parts gold and 14 parts other metals. The higher the gold content, the more yellow the jewelry will be, I have seen some 22 K gold jewelry and it’s very yellow.

As far as durability, 10 K will be more durable than 14 K, because gold is soft, so the higher the percentage of gold, the less durable the jewelry will be.

And different countries have different rules about how high a percentage of gold there has to be before jewelry can be called gold. In Australia the minimum is 9K, which is why you will see 9K gold jewelry advertised there.

Post # 6
Member
2581 posts
Sugar bee
  • Wedding: October 2014 - UK

@FauxPas2012:  My ering is 9k gold, and it’s been fine. The low karat makes it a bit harder than the higher karat golds, but colour-wise it’s still pretty great.

Post # 7
Member
10219 posts
Sugar Beekeeper
  • Wedding: December 2012

24 K Gold = 99.9 % Gold

18 K Gold = 75 % Gold (18 / 24 = 75 %) and 25% Alloy

14 K Gold = 58.33 % Gold (14 / 24 = 58.33 % or aprox 60 %) and 40% Alloy

10 K Gold = 41.66 % Gold (10 / 24 = 41.66 % or aprox 42 %) and 58% Alloy

— — —

All of this is by weight… so for example 18 K Gold is 18 Parts Gold + 6 Parts Alloy… (18 + 6 = 24), or 75% Gold & 25% Alloy.  The most frequent combo for the Alloy in 18 K Gold is 12.5% Silver and 12.5% Copper. 

As noted by @luckyshot: altho all countries use the same calculation for Gold & Alloys… different countries allow different percentages.  In NA… our standards are 24, 18, 14, and 10.  In other countries you’ll see numbers such as 8, 9, 19, 21 and 22 Karats.

Hope this helps,

 

Post # 8
Member
852 posts
Busy bee
  • Wedding: September 2013

@FauxPas2012:  I have several peices of 9k gold they hold up so much better than higher k peices. Less scratches bending etc. They do vary in colour in my opinion and some are better than others. I prefer a deeper less yellow gold (love all the rose gold I have seen on here too) but I have some 9k that is florecent yellow and some that is darker. I guess it depends what it is mixed with.

My wedding band is 18k ive been wearing it 18 days and its already showing signs of wear! (But I love that too!)

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