What is the carat of a diamond? A detailed explanation of the different sizes

Diamonds have long fascinated people because of their beauty and rarity. The unit of weight used to measure diamonds, "carat," is an important factor in evaluating diamonds. In this article, we will explain the meaning of diamond carat in detail, and explain the different sizes and how to choose a diamond based on that.

Eva Solitaire Ring Emerald Cut Diamond Ring Diamond/Lab Grown Diamond Yellow Gold Wearing Picture

Reference image: DIALLURE 3 carat emerald cut ring

1. What is a Carat? Its Definition and History

Carat Definition

Carat (ct) is a unit of weight for gemstones and pearls, with 1 carat equaling approximately 0.2 grams (200 milligrams). This unit is widely used to assess the value of precious gemstones, especially diamonds.

Historical Background of Karat

The name "carat" comes from the seed of the carat tree, which is native to Africa and the Middle East, and was used by jewelers as a trading standard because its weight was relatively constant during the ancient and medieval periods.

Carat Standardization

In the 19th century, the gemstone market became international and required standardization. In 1888, at a meeting of the International Jewelers' Association in Paris, it was decided to officially define carat weight, establishing 1 carat = 200 milligrams. This reduced confusion in the trade and allowed for more fair valuation of gemstones.

2. Diamond Size by Size: Compare the Visual Impact with Images

0.3 carat diamond

Although this size is relatively common in Japan, overseas it is used as side stones known as melee diamonds. Because of its subtle size, it is popular with people who prefer a subtle look where they don't want the diamonds to stand out too much.

0.5 carat diamond

Do you understand how a 0.5 carat diamond gives off a sense of sparkle and creates a glamorous impression? A diamond engagement ring from DIALLURE starts at 450,000 yen, which is around the average price range.

1 carat diamond

A 1 carat diamond is generally around 6.5mm in diameter. This size is very popular among those who select lab-grown diamonds because it is considered the ideal size for many people. Diamonds of this size have a good balance of having a solid presence on the hand, yet being easy to wear on a daily basis.

2 carat diamond

A 2-carat diamond is approximately 8.1mm in diameter. This size makes it stand out and is very attractive as an accessory for special occasions. 2-carat diamonds tend to attract attention because of the brilliance of the gemstone and the weight of its carat weight.

3. Tips for choosing a diamond: It's not just about carat

The Importance of the 4Cs

The value of a diamond is determined not only by its carat weight, but also by the "4Cs" of cut, color and clarity. These factors directly affect a diamond's beauty, brilliance and rarity.

・Cut : The shape and finish of a diamond greatly affect its brilliance. A diamond with an ideal cut reflects light effectively and looks more beautiful.

・Color : Diamonds come in a variety of colors, from colorless to slightly colored. Diamonds that are close to colorless are considered to be highly valuable.

・Clarity : Indicates the presence or absence of inclusions or scratches in the diamond. The higher the clarity, the more transparent and beautiful the diamond will be.

Carat and budget

When purchasing a diamond, it is important to consider not only the carat weight but also the other 4C factors. When setting a budget, one goal is to choose a diamond with a high carat weight, but by choosing it while considering the balance with other factors, you can get a more satisfying piece of jewelry.

How to choose the size

The size of a diamond depends on personal preference, so 1 carat or 2 carats is not necessarily the "right answer." We recommend that you check the size at the store, taking into consideration the balance when it is worn on your hand and the scene of use. Also, the appearance changes depending on the type of jewelry, such as a ring or necklace, so it is a good idea to try out multiple sizes and styles.

summary

The carat weight of a diamond is an important indicator for measuring the weight and value of a gemstone, and also has a significant impact on its size and visual impact. It is important to find the perfect diamond for you by considering not only the carat weight but also the 4Cs of cut, color, and clarity.

By getting a better understanding of how to choose and size diamonds, you will be able to get a wonderful piece of jewelry to decorate a special day. Please choose a wonderful diamond for yourself or a loved one.

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