18 Karat Gold
Hey, gold enthusiasts! ✨ Ever wondered what's up with 18-karat gold and why it's the buzzword in every chic jewelry store? Think of it as the A-lister of the gold world: it's got the glam of pure gold but with a touch of down-to-earth durability. So, whether you're rocking it on a statement necklace for brunch or a dainty ring for that Insta pic, 18-karat gold is your go-to for that perfect blend of sparkle and strength. Dive in with us as we spill the tea on this golden superstar and give you all the deets you never knew you needed! 💍🌟
18 karat gold

What is 18 Karat Gold Made Of?

First and foremost, it's a crowd-pleaser for a reason. Comprising 75% pure gold mixed with 25% other metals like copper or silver, 18-karat gold strikes that perfect balance between purity and strength. It's got enough of the real deal to give it that rich, warm hue that gold lovers crave, but it's also alloyed enough to be durable and resistant to the wear and tear of everyday life.
18 karat gold

How Pure is 18 Karat Gold?

As mentioned above, 18-karat gold contains 75% pure gold.

Is 18 Karat Gold Real?

Absolutely, 18-karat gold is very real! In the world of gold jewelry, the term "karat" is a measure of gold's purity. Pure gold is 24 karats, meaning it's 100% gold with no additional metals. However, pure gold is quite soft and can be prone to scratching and bending, so it's often alloyed (mixed) with other metals to give it strength and durability.

18-karat gold means that the gold piece is made up of 75% pure gold and 25% other metals, such as copper or silver. The addition of these metals not only strengthens the gold but can also slightly change its color. For instance, more copper can give gold a redder hue, while silver can make it appear a bit paler.

So, when you see an 18-karat gold piece, you're looking at a piece that has a significant amount of real gold in it. The presence of other metals doesn't diminish its authenticity as gold; it simply means it has been crafted to be more resilient for everyday wear.

Why Can 18 Karat Gold Have Different Colours?

18 karat gold can exhibit different colors because of the varying metal alloys that are mixed with the gold. The term "karat" refers to the purity of gold, with 24 karats being pure gold. 18 karat gold is 75% pure gold, and the remaining 25% is made up of other metals. Depending on which metals are used in that 25%, the resulting gold alloy can have distinct colors. Here's a breakdown of some of the most common colored gold alloys:
  1. Yellow Gold: This is the classic gold color that most people think of when they hear the word "gold." 18-karat yellow gold typically consists of gold, silver, and copper. The higher the copper content, the redder the gold will appear.
  2. White Gold: This type of gold has a silvery-white color and is typically an alloy of gold and palladium or gold with palladium, zinc, and copper. Many white gold pieces are also coated in rhodium to enhance their shine and brightness. Over time, however, this rhodium layer can wear off, requiring re-plating.
  3. Rose Gold (or Pink Gold): This gold has a beautiful pinkish hue and is created by alloying gold with a higher ratio of copper and sometimes a bit of silver.
  4. Green Gold: Less common than the other types, green gold is an alloy of gold and silver, and sometimes zinc or cadmium. The higher the silver content, the greener the hue.

Does 18-karat Gold Tarnish?

18-karat gold, being a blend of 75% pure gold and 25% other metals, is less susceptible to tarnishing compared to lower-karat gold. However, the likelihood of 18-karat gold tarnishing depends on the other metals alloyed with the gold.

  1. Copper: When gold is alloyed with a higher percentage of copper, as can be found in certain types of rose gold, it might darken or tarnish over time due to the oxidation of copper. This is especially the case when the jewelry is exposed to moisture or sulfur-rich environments. However, the tarnish rate is significantly less than that of pure copper or silver.
  2. Silver: Silver is another metal that can tarnish. If there's a significant amount of silver in the 18-karat gold alloy, it could lead to some tarnishing, although again, it would be at a much-reduced rate compared to sterling silver.
  3. Environmental Factors: Exposure to certain chemicals, cosmetics, and chlorine can sometimes cause a reaction with the metals in the gold alloy, leading to discoloration.
That said, the tarnishing or discoloration of 18-karat gold, if it occurs, is typically minimal, and the gold can be easily cleaned and polished to restore its shine. Proper care, such as keeping it away from harsh chemicals and storing it in a dry, cool place, can help maintain its luster for a long time.

Can You Wear 18 Karat Gold in the Shower?

Yes, you can technically wear 18-karat gold in the shower, but it's not always recommended. Water itself won't damage the gold, but there are a few factors to consider:
  1. Chemicals: The tap water can contain chlorine or other chemicals that can tarnish gold over time. While 18-karat gold is relatively resilient, repeated exposure can potentially impact its shine and luster.
  2. Soap & Shampoo Residue: Over time, soap and shampoo can leave a film on your gold jewelry, making it appear dull and lackluster. Moreover, some of the chemicals in beauty products might not be friendly to gold or any gemstones that might be set in the jewelry.
  3. Physical Impact: Showering involves a lot of movement, and there's a risk of accidentally knocking your jewelry against hard surfaces like tiles, faucets, or even glass shower doors. Over time, this can lead to scratches or other damage.
If you love wearing your 18-karat gold jewelry and don't want to take it off, it's okay on occasion. However, it's a good practice to remove it when showering to maintain its beauty and longevity. After all, a little caution can go a long way in preserving your precious pieces.

How is 24 Karat Gold Different from 18 Karat Gold?

24-karat gold and 18-karat gold are both forms of gold, but they differ primarily in their purity and composition:
1. Composition:
    • 24 Karat Gold: Being 100% gold, 24 karat doesn't have any alloyed metals.
    • 18 Karat Gold: The remaining 25% in 18 karat gold usually consists of metals like copper, silver, zinc, or palladium, depending on the desired color and properties of the final product. For example, a higher proportion of copper gives rose gold its reddish-pink hue. 
2. Color and Softness:
    • 24 Karat Gold: It has a bright and intense yellow hue due to its purity. It's also soft and malleable, making it susceptible to scratches and bending.
    • 18 Karat Gold: Its color might be slightly less intense than 24-karat gold, depending on the alloying metals. It's also harder and more durable, suitable for everyday wear jewelry.
3. Price:
    • 24 Karat Gold: Typically, being pure gold, 24 karat is more expensive than 18 karat gold.
    • 18 Karat Gold: Since it contains less gold by weight, it usually costs less than 24 karat gold.
When choosing between the two for jewelry or investments, consider factors like the purpose (e.g., wearing vs. storing as an investment), budget, and personal preferences regarding color and durability.

Is 18 or 24 Karat Gold Better?

Well, it depends on what you are looking for as a consumer. For those who crave the utmost purity and buttery-yellow hue, 24-karat gold takes the crown. It's 100% gold without any alloyed metals, making it the purest form you can get. But with that high purity level comes a bit of a downside—it's relatively soft and can be more prone to scratches and dents.

While it might not boast the same level of purity, 18-karat gold—which is 75% gold and 25% other metals like copper or silver—offers a bit more resilience. That added durability makes 18-karat gold a popular choice for everyday jewelry pieces, like rings and bracelets that might see a bit more wear and tear. Plus, it still flaunts a rich, golden glow, just with a touch more strength behind it.

What's the Difference Between 14 and 18 Karat Gold?

14-karat gold is an alloy composed of 58.3% gold and 41.7% other metals. The additional metals, which can include copper, zinc, silver, or nickel, give the gold added strength. This blend results in a more durable material that is less prone to scratching and wear, making it especially suitable for everyday jewelry items. The hue of 14-karat gold may also be slightly less vibrant due to its lower gold content.

18-karat gold, on the other hand, consists of 75% gold alloyed with 25% other metals. This higher percentage of gold gives 18-karat pieces a richer, deeper gold color compared to 14-karat items. However, this increased purity means 18-karat gold is somewhat softer and more susceptible to damage from everyday wear.

Is 14 or 18 Karat Gold Better?

When determining whether 14-karat or 18-karat gold is "better," it's essential to consider what "better" means in the context of your needs, as each type of gold has its distinct advantages.

14-karat gold contains 58.3% gold alloyed with other metals, making it more durable and resistant to wear and tear. This strength makes 14-karat gold a popular choice for everyday jewelry pieces like wedding bands or items that might be subject to frequent handling. Additionally, its relatively lower gold content makes it more affordable than its 18-karat counterpart, offering a beautiful gold aesthetic without the higher price tag.

18-karat gold, on the other hand, boasts a purer gold content, precisely 75% gold mixed with 25% other metals. This higher gold concentration gives 18-karat gold a richer, more vibrant color that appeals to those looking for a more luxurious appearance in their jewelry. However, this purity also makes it slightly softer and more susceptible to scratches and dings. For those seeking a balance between purity, color richness, and a statement of luxury, 18-karat gold may be the preferred choice.

What is 18 Karat Gold Plated?

18 Karat Gold Plated refers to a process where a layer of 18-karat gold is applied to a base metal to give it the appearance of solid gold. Here's a dive into this golden facade:
  1. The Basics: Karat is a measure of gold purity, with 24 karats being pure gold. 18 karats means the gold is 75% pure, with the remaining 25% consisting of other metals like copper or silver. When something is "18 Karat Gold Plated," it's essentially coated with a layer of this 75% pure gold.
  2. The Process: Electroplating is the most common method for gold plating. In this process, the item to be plated (often made of a cheaper metal like brass or copper) is submerged into a solution containing gold ions. When an electric current is passed through the solution, the gold ions are attracted to the surface of the base metal, creating a thin layer of gold on top.

Does 18 Karat Gold Plated Fade?

While 18 karat gold plated items have the allure of gold, it's essential to understand that the gold layer is very thin. This means that over time, with wear and tear, the gold layer can wear off, revealing the base metal beneath. To extend the life of gold plated items, it's crucial to handle them with care. Avoid exposing them to chemicals, harsh abrasives, and even excessive sweat, as these can expedite the wear of the gold layer. Regular gentle cleaning with a soft cloth can help maintain their shine.

Is 18 Karat Gold Durable?

Yes, 18-karat gold offers a balance between purity and durability, making it a popular choice for many types of jewelry. 18-karat gold is made up of 75% gold and 25% other metals, such as copper, silver, zinc, or palladium. These alloyed metals give 18-karat gold a level of strength and resistance to wear that pure gold (24 karat) lacks.

Does 18 Karat Gold Turn Green?

18-karat gold itself does not turn green. However, on rare occasions, the wearer's skin underneath the gold jewelry might appear green. Here's why this can happen:
  1. Metal Alloys: 18-karat gold is composed of 75% gold, and the remaining 25% is made up of other metals, which can vary. Some alloys, particularly those that contain copper, might react with the acids and salts in a person's sweat, leading to a greenish residue on the skin. It's not the gold itself turning green but the reaction of the alloyed metals with the body's chemistry.
  2. Cosmetics & Lotions: Sometimes, beauty products, lotions, or perfumes can react with the metal alloys in the gold, causing a slight discoloration on the skin.
  3. Other Environmental Factors: Chlorine, certain medications, and individuals' unique body chemistry can also result in a greenish hue on the skin.
It's worth noting that higher karat gold, like 18k, is less likely to cause this reaction compared to lower karat gold, such as 10k or 14k because it contains a higher percentage of pure gold and fewer other metals.
If someone is experiencing a greenish tint on their skin from their 18-karat gold jewelry, it's usually not a cause for health concerns. However, if this is bothersome, one might consider:
  • Cleaning the jewelry regularly.
  • Limiting exposure of the jewelry to lotions, perfumes, and other chemicals.
  • Checking with a jeweler to see if a protective coating can be applied to the parts of the jewelry that come into direct contact with the skin.

Is 18 Karat Gold Hypoallergenic?

18-karat gold can be hypoallergenic, but its allergenic properties largely depend on the metals alloyed with the gold. Here's a deeper dive:
  1. Gold Purity: Pure gold (24 karat) is naturally hypoallergenic, meaning it doesn't cause allergic reactions. However, 18-karat gold is made up of 75% gold and 25% other metals.
  2. Common Allergens: The most common metal allergen in jewelry is nickel. If nickel is part of the 25% of other metals in an 18-karat gold alloy, then it can cause allergic reactions in individuals who are sensitive to nickel.
  3. Safer Alloys: For those with known metal sensitivities, looking for 18-karat gold that's alloyed with hypoallergenic metals like palladium can be a better option. These alloys tend to be safer for sensitive skin. In many countries, regulations have reduced or eliminated the use of nickel in gold jewelry due to its allergenic properties.
  4. Other Factors: Even if nickel is not present, other metals alloyed with gold, though less commonly, can also cause allergic reactions in some individuals. It's essential to know the composition of your jewelry if you have metal allergies.
In conclusion, while 18-karat gold can be hypoallergenic, it's crucial to understand the specific alloy components if you're concerned about allergies. If you have a known metal allergy or sensitive skin, consulting with a jeweler about the alloy's composition in a particular piece can be a wise move.

Does 18 Karat Gold Have Nickel In It?

Whether 18-karat gold contains nickel largely depends on the specific alloy composition determined by the manufacturer or jeweler. It varies from piece to piece.

How to Clean 18k Gold?

Cleaning 18 karat gold is a simple process, but it's essential to be gentle to maintain its shine and avoid scratching. Here's a step-by-step guide to make your 18 karat gold jewelry sparkle like new:
  1. Prepare a Cleaning Solution: Start by mixing a few drops of mild dish soap with warm water. Avoid using any harsh detergents or chemicals that might damage the gold.
  2. Gentle Soak: Place your 18 karat gold jewelry in the soapy water solution and let it sit for about 20-30 minutes. This allows the solution to loosen up any dirt or oils that have accumulated on the jewelry.
  3. Soft Brushing: Using a soft-bristle brush, like a toothbrush with soft bristles, gently scrub the jewelry. Make sure you get into all the nooks and crannies, especially if the piece has intricate designs. Remember, always be gentle; the goal is to remove dirt, not to scratch the gold.
  4. Rinse: Once you've finished brushing, rinse the jewelry under cool running water to remove any soapy residue. It's crucial to ensure all the soap is washed away, as any remnants can dull the shine of your gold.
  5. Dry Thoroughly: Gently pat the jewelry dry with a soft, lint-free cloth. Ensure it's completely dry before storing to prevent any water stains or potential for tarnish on any alloyed metals in the 18 karat gold.
  6. Store Properly: Once clean, store your gold pieces separately in a jewelry box or pouch to prevent them from scratching against each other or other types of jewelry.
Remember, always avoid exposing your gold jewelry to household cleaners, especially chlorine, which can discolor or damage the gold. If your 18 karat gold jewelry contains gemstones, be extra cautious, as some cleaning methods can damage delicate stones. When in doubt, it's always a good idea to consult with a professional jeweler or have them professionally cleaned.

Is 18 Karat Gold Good?

Absolutely! 18-karat gold is a fantastic choice. Not only does it offer a slightly more affordable price point than its 24-karat counterpart (thanks to the other metals it's mixed with), but its longevity and resilience mean it's a piece that can be worn, cherished, and passed down through generations. 

What Stamp Does 18 Karat Gold Have?

18-karat gold jewelry is often stamped to indicate its purity. The common stamps or hallmarks you might find on 18-karat gold pieces include:
  1. 750: This is a common stamp for 18-karat gold. The "750" signifies that the piece is 75% pure gold, which corresponds to 18 out of 24 parts gold (or 18 karats).
  2. 18K: This is a straightforward indication of the karat value of the gold. "18K" means the piece is made of 18-karat gold.
  3. 18KT: Just another variation of the above, with "KT" standing for "karat."
  4. 18C or 18CT: This stamp is especially common in some British Commonwealth countries. "C" or "CT" stands for "carat," which is another term used for karat in these regions.
Keep in mind that while these stamps can give an initial indication of the gold's purity, they can be faked. If there's any doubt regarding the authenticity of a piece, it's always a good idea to have it tested by a reputable jeweler or use a gold testing kit.


18-karat gold stands as a symbol of luxury and durability, bridging the gap between purity and practicality. Comprising 75% gold and 25% alloying metals, it finds a balance that offers both a rich gold color and a resistance to wear and tarnish. 

As a standard choice for high-end jewelry, it's cherished for its luster, prestige, and inherent value. Whether you're a jeweler, an investor, or simply an aficionado, understanding the unique properties and value of 18-karat gold is essential. Thanks for reading!