9ct gold contains 37.5% pure gold. 18ct gold contains 75% pure gold. The remainder is an alloy of other metals. The other metals are dependant on the colour of gold.
9 karat gold is of the lowest purity due to the high percentage of other metal alloys like copper. The prices of 9ct gold can vary depending on the current market and demand. Generally, you can expect about $28.29 per gram for your 9-karat gold jewellery.
18 karat gold is purer and, well, more gold than 9 karats, so it's always best to opt for 18 karats if you can. It doesn't tarnish, it's more durable and because it costs more, it'll be worth more in the long run. Conversely, 9-karat gold contains a higher proportion of other metals so it will tarnish over time.
9ct gold (37.5% purity)
While pure yellow gold does not tarnish and will retain its original colour forever, the strong presence of alloys (the metals that make up 62.5 percent of 9ct gold) in 9ct gold are susceptible to discolouration.
The higher purity of 18ct gold means it is more resistant to tarnish and corrosion than lower carat alloys. 18ct yellow gold has a deep, rich and beautiful true 'gold' colour. Due to the higher gold content, items made in 18ct gold have substantially more 'solidity' than 9ct items.
Wearing solid gold jewelry, white gold or yellow gold, in the shower will not harm the metal itself, however it can reduce the shine therefore it is not recommended. Showering with gold plated jewelry can eventually cause the gold layer to wear off completely, therefore you should definitely refrain from doing so.
An engagement ring made from 9ct gold can not be expected to last more than a lifetimes normal wear. The obvious question here is why would an alloy like the 375 above even be labeled as gold.
Due to its sturdiness, all favour the most affordable option, a 14 karat gold jewellery item. A higher amount of alloyed metals makes 14K gold more resistant to wear and tear. And as it is harder and more durable, it is ideal for making daily-wear jewellery, especially for an active lifestyle.
No, gold does not turn green. One of it's biggest properties is that it doesn't tarnish or oxidize. If you have something that is supposed to be gold, and it turns green, may be it isn't gold, or maybe there's a lot of copper mixed in with it.
We recommend removing your 9ct. gold jewellery when you swim, bathe or whilst doing vigorous exercise, to avoid tarnishing. All Luke Rose 9ct. yellow and rose gold comes with a branded gold polishing cloth.
The first way you can check is to look for any hallmarks that give you its purity number. The most common purity in the UK is 9ct gold which is 37.5% pure gold and represented by the hallmark '375'.
If you're wearing your ring while using harsh detergents around the house or in a pool or spa that has been treated with chlorine, your ring will experience corrosion. When these chemicals react with the metal alloy in the ring, it will cause those metals to corrode and turn black, thus blackening the skin underneath.
It also generally will have a richer colour. This is also the best choice when creating an heirloom piece. However if you are looking for something in a lower price bracket or a dress piece that is worn less regularly, then 9ct gold is great option. Some people prefer the paler colouring of 9ct against their skin tone.
This numerical stamp was made compulsory in 1999 so will be found on all hallmarked items. For Auree, the most relevant numerical stamps are 925 for Sterling Silver, 375 for 9ct Gold and 750 for 18ct Gold.
Pure gold does not corrode or tarnish, but the other metals used to make gold alloys can. 18ct gold contains 75% pure gold and 25% other metals, while 9ct gold contains 37.5% pure gold and 62.5% other metals. Because 18ct gold contains less other metals, it's more resistant to tarnishing and corrosion than 9ct gold.
CARE TIPS. Clean your 9k gold jewellery with a jewellery polishing cloth, using warm water wash off any residue. 9k gold jewellery can be worn everyday and in water; however, salt water and chemicals may react with the metal causing it to temporarily tarnish—no permanent damage should occur.
14K & 9K solid gold jewellery is designed for everyday wear & will not fade. These pieces are resistant to water, moisture & sweat but Esq recommends with any jewellery regardless of material to avoid perfumes, hand sanitisers, fake tan, moisturisers, direct sunlight and chemicals.
If you're buying a small gift or something for everyday wear, 9K gold is a great option because it's very durable and beautiful. However, if you're looking for a gold item for long-term wear, like an engagement ring, then you might want to invest in 18K gold which is better quality and has a higher value.
Both white gold and yellow gold are high quality metals for your jewelry. However, they do differ significantly in strength. Thanks to its higher content of alloys, white gold jewelry is more resistant to dents, scratches, and damage than yellow gold. For highly active wearers, white gold might be a safer choice.
In its pure form, gold is a very soft metal. It's too delicate for everyday wear, so it's often alloyed (or mixed) with other metals such as silver, copper, nickel, and zinc to improve its strength and resilience. The most common mixtures of gold are 14K, 18K, and 22K, but 14K and 18K are the most ideal for jewelry.
Countries such as Switzerland, Australia, and Canada are known for producing high-purity gold, while countries such as China and Russia are the largest producers of gold in the world.
The easiest way to care for your gold jewellery at home is to make a mixture of 10 parts water and 2 parts dish soap. Soak your pieces for at least two hours, then polish with a soft cloth. Never use paper towels to polish your jewellery.
9K gold contains only 37.5% pure gold, while 18K gold contains 75% pure gold. The second difference is the price. 9K gold contains more alloy metals than gold. Therefore, it is less expensive than 18K gold which contains more gold than alloy metals.