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Understanding the Gold Purity Chart can seem overwhelming at first, but don't worry, I've got you covered.
The gold purity chart is a standardized system that categorizes gold into different purity levels, ranging from 9K to 24K.
Here are some key points to keep in mind:
A 9K gold piece contains 37.5% of pure gold, which is the lowest on the gold purity chart.
The most common gold purity level is 14K, which is 58.3% pure gold.
18K gold is another popular choice, making up 75% of pure gold.
24K gold is the highest purity level on the gold purity chart, containing 99.9% pure gold.
Gold Purity Chart Basics
Gold purity is measured in carats, with 24 carats being pure gold. Each carat is a fraction of a gram of pure gold.
A karat is a unit of measurement that is dependent on the proportion of gold to alloy metals added, with each karat being a fraction of a gram of pure gold. The karat system is used to measure the purity of gold in jewelry.
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Gold purity is also measured in fineness, which represents the purity in parts per thousand. Fineness is often marked on jewelry without a decimal point.
There are different standards of fineness used in the industry, including .583 (.585) for 14 carat gold and .750 for 18 carat gold. The fineness mark is 585 in most 14 carat gold jewelry.
Here's a breakdown of the common standards of fineness:
Pure gold is rarely used for jewelry pieces because of its softness and malleability, and tendency to scratch and mark. It's usually alloyed with base metals for use in jewelry, altering its malleability, color and other properties.
The minimum caratage for an item to be called gold varies by country, with 10 carat being the legal minimum in the US and 9 carat being the lowest caratage permitted in France, the UK, Austria, Portugal and Ireland.
Gold Purity Table
Gold purity is a crucial aspect to consider when buying or selling gold. A karat is a unit of measurement that determines the proportion of gold to alloy metals added.
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The minimum karatage for an item to be called gold varies by country. In the US, 10 karat is the legal minimum accepted standard of gold caratage, while in France, the UK, Austria, Portugal, and Ireland, 9 karat is the lowest karatage permitted to be called gold.
Here's a breakdown of the common karatages and their corresponding purity levels:
In the United States, 14 carat gold is the most often purchased, while in Italy and other European nations, 18 karat gold is the most popular.
Choosing the Right Karat
A higher karat doesn't always mean higher quality gold. In fact, 24 karat gold is rarely used in jewelry making because it's too soft and can be easily damaged.
The most common karat used in jewelry is 18 karat gold, which means 18 out of 24 parts of the piece is pure gold. This relatively high number makes 18 karat gold a sought-after choice for everyday wear.
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The lower the number of karats, the less pure gold it contains, making it more affordable and durable for regular use. For example, a 14 karat gold piece contains 58.3% gold purity.
The minimum caratage for an item to be called gold varies by country, with the US requiring 10 carat and France, the UK, Austria, Portugal, and Ireland allowing 9 carat.
Here's a quick reference table to help you choose the right karat:
Keep in mind that the lower the karat, the more durable the piece will be, but it will also contain less pure gold.
Gold Markings and Colors
Gold markings and colors can be a bit confusing, but don't worry, I've got you covered.
The most common gold color is 14k, which is marked with a stamp like "585" or "14K". This indicates that the gold is 58.5% pure.
Gold colors can also be indicated by their color, with white gold being a popular choice for engagement rings. White gold is often alloyed with other metals to give it a silver-white color.
The color of gold can also be affected by its purity, with higher purity gold tending to be a deeper yellow color.
Common Markings
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Gold markings can be confusing, but they're actually pretty straightforward once you know what to look for. You can often find markings that indicate the division of pure gold and other materials making up the full alloy.
One common marking you'll see is "24K / 999 / 999.9", which is typically used in investment-grade bullion and coins. This marking indicates that the gold is 99.9% pure.
Another common marking is "18K / 750", which is often used in high-end jewelry that benefits from increased durability. The "18K" indicates that the gold is 75% pure.
You'll also see "14K / 583 or 585" markings, which are typically used in high-quality jewelry at a more accessible price point. The "14K" indicates that the gold is 58.3% pure, and the "583 or 585" indicates the fineness of the gold.
Lower-karat gold, like "10K / 417", has higher durability but lower luster than high-karat counts. The "10K" indicates that the gold is 41.7% pure.
Here's a quick reference guide to common gold markings:
I've seen this marking on some of my own jewelry pieces, and it's always a good idea to check the marking to make sure you know what you're getting.
Gold Colors
Gold Colors play a significant role in determining the overall look and value of gold items.
The color of gold is influenced by the types of metals that are mixed with the pure gold.
Yellow gold includes a mixture of copper and silver, giving it a distinct warm tone.
Rose gold is mixed with a greater amount of copper than yellow gold, resulting in a reddish hue.
White gold, on the other hand, tends to include mixtures of palladium, nickel, or manganese, which gives it a cooler appearance.
Frequently Asked Questions
What is the best purity of gold?
There is no single "best" purity of gold, as it depends on the intended use and desired properties of the gold. However, 24 carat gold is often considered the highest standard of purity, containing 99.9% gold with no other metals.
Is .9999 pure gold 24K?
Yes, .9999 fine gold is equivalent to 24K gold, indicating a purity of 99.99% gold content. This is the highest purity level of gold available.
Is 375 10K gold?
No, 375 is not 10K gold, it is actually 9K gold. Typically, 10K gold is found with a purity of 417 in U.S. markets.
Sources
- https://singaporebullionmarket.com/gold-karat-chart/
- https://www.gold.org/about-gold/about-gold-jewellery
- https://www.onecklace.com/tips/karat-gold-understanding-gold-purity/
- https://www.kanakbullion.com/measure-purity-of-gold
- https://www.goldsilverbuffalo.com/resources/what-is-gold-purity-the-differences-between-scale-levels/
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