Are you also puzzled by diamond size charts? Selecting the right diamond can be quite a complicated process when it comes to evaluating charts. These charts assist you in understanding the actual dimensions of a diamond according to the carat weight, thus allowing choosing the variant that fits the required parameters. In this guide, we will show what diamond size charts are and how to interpret them, what connection has carat weight with diamond size, and how to avoid mistakes while choosing a diamond size. Suppose a person is shopping for an engagement ring or any other precious item that requires the attention of the reader. In that case, this article is useful since it guides the reader and makes them feel comfortable while shopping.
Importance of Diamond's Millimetre Measurement
The size of the diamond is in millimetres since two diamonds may weigh the same carats, but they are cut and look different. For instance, an emerald-cut diamond oval cut or pear-cut diamond looks larger than a round cut.
Once again, if you are buying a diamond for some specific ring setting, consider millimetre measurements. You might need a diamond with exact millimetre sizes depending on the setting style.
Millimetre measurements are crucial for non-round shapes like cushions and emerald diamonds. These measurements show if a cushion diamond is more square or if an emerald diamond is more rectangular.
Once again, if you are buying a diamond for some specific ring setting, consider millimetre measurements. Visit our diamond chart to view the carat weights for brilliant-cut diamonds.
When purchasing diamonds, carat weight, and millimetre measurements are recognized and provided on the certificate of the diamond. All-natural diamonds at Clarity have a GIA certificate; all lab-grown diamonds come with a certificate of IGI and igi diamond grading chart.
What are Pointers?
In the diamond trade, you might hear the term "pointers," which relates to millimetre sizes and carat weights. A one-pointer is a 0.01-carat diamond. A two-pointer is a 0.02-carat diamond, and so on. These terms are usually used for smaller diamonds on engagement rings or other jewellery. Every diamond is unique, so it's important to learn about the average millimetre sizes for different carat weights to find the best option.
Typical Shapes on a Diamond Size Chart
A diamond size chart is an efficient guide that assists one in evaluating the sizes of various diamond shapes. Usually, it presents the face-up sizes of diamonds at different carat weights to the buyer to help drive the process of choosing the right diamond shape and size. The round brilliant cut diamond is the most popular type due to its symmetry and having 58 facets; they are perfect for any type of arrangement.
Other popular diamond shapes include:
- Oval: It is slim with connotations of femininity and also of length.
- Pear: This shape resembles that of an oval, but it is elongated at the bottom and has a sharp edge.
- Marquise: This shape is oval and pear-shaped and is commonly used in engagement rings.
- Emerald: This shape is rectangular, and it is faceted in a step-cutting manner.
- Asscher: This shape is also rectangular, and the corners are more squared off than in the previous example.
- Radiant: This shape is an amalgamation of the round shape and oval shape.
- Cushion: This shape can be a square or rectangle with rounded edges or corners.
- Heart: Ah, this shape needs no explanation, does it?
- Trillion: This shape is a large triangular shape that has curved edges.
|
Carat Weight |
Asscher |
Cushion |
Emerald |
Heart |
Marquise |
Oval |
Pear |
Princess |
Radiant |
Round |
|
0.3 carat |
3.8 mm |
3.8 mm |
3.9 mm |
4.4 mm |
5.2 mm |
4.5 mm |
4.8 mm |
3.7 mm |
4 mm |
4.3 mm |
|
0.4 carat |
4 mm |
4.1 mm |
4.2 mm |
4.8 mm |
5.7 mm |
5 mm |
5.3 mm |
4.3 mm |
4.3 mm |
4.7 mm |
|
0.5 carat |
4.3 mm |
4.5 mm |
4.5 mm |
5.2 mm |
6.1 mm |
5.3 mm |
5.5 mm |
4.8 mm |
4.5 mm |
5.2 mm |
|
0.6 carat |
4.6 mm |
4.7 mm |
4.8 mm |
5.5 mm |
6.5 mm |
5.7 mm |
6 mm |
4.9 mm |
5.1 mm |
5.4 mm |
|
0.7 carat |
4.8 mm |
5 mm |
5 mm |
5.7 mm |
6.8 mm |
5.9 mm |
6.3 mm |
4.8 mm |
5.1 mm |
5.6 mm |
|
0.8 carat |
5.1 mm |
5.2 mm |
5.3 mm |
6 mm |
7.1 mm |
6.2 mm |
6.7 mm |
5.3 mm |
5.5 mm |
5.9 mm |
|
0.9 carat |
5.2 mm |
5.4 mm |
5.5 mm |
6.2 mm |
7.4 mm |
6.4 mm |
6.8 mm |
5.6 mm |
5.5 mm |
6.1 mm |
|
1 carat |
5.4 mm |
5.6 mm |
5.7 mm |
6.4 mm |
7.7 mm |
6.7 mm |
7.3 mm |
5.5 mm |
6 mm |
6.5 mm |
|
1.5 carat |
6.2 mm |
6.5 mm |
6.7 mm |
7.4 mm |
8.7 mm |
7.7 mm |
8.3 mm |
6.6 mm |
7.2 mm |
7.7 mm |
|
2 carat |
6.9 mm |
7.2 mm |
7.2 mm |
8.1 mm |
9.6 mm |
8.4 mm |
8.9 mm |
7.3 mm |
8 mm |
8.2 mm |
|
2.5 carat |
7.4 mm |
7.7 mm |
7.8 mm |
8.7 mm |
10.3 mm |
9.1 mm |
9.6 mm |
7.8 mm |
8.7 mm |
8.7 mm |
|
3 carat |
8 mm |
8.2 mm |
8.2 mm |
9.2 mm |
11.4 mm |
9.6 mm |
10.1 mm |
8.3 mm |
9.1 mm |
9.2 mm |
|
3.5 carat |
8.6 mm |
8.6 mm |
8.6 mm |
9.7 mm |
12.1 mm |
10.2 mm |
10.8 mm |
8.7 mm |
9.7 mm |
9.7 mm |
|
4 carat |
8.7 mm |
9 mm |
9 mm |
10.4 mm |
12.6 mm |
10.6 mm |
11.2 mm |
9.1 mm |
10.2 mm |
10.2 mm |
|
5 carat |
9.5 mm |
9.7 mm |
9.6 mm |
11 mm |
13.4 mm |
11.3 mm |
12 mm |
9.9 mm |
11.3 mm |
10.9 mm |
Regardless of the kind of ring shape you have selected, it is essential to be satisfied with the size of the center diamond and its appearance. Since a diamond is intended to be worn for a lifetime, it is important to choose one that the wearer truly desires.
Different diamond size chart
Several diamond size charts consider such aspects as shape, depth, and table ratio. These charts assist in ensuring that the visual size of diamonds of the same carat weight is accurately compared and a proper understanding of how those particular diamonds will look in reality is achieved.
Round Diamond Size Chart
The round diamond size chart is by far the most popular cut for engagement rings because of its flexibility and lovely appearance. This cut has 57 facets and is recognized for its high brilliance and performance as compared to most other diamonds when cut and finished on a proportionate scale. The size of a round diamond plays a huge role in determining its appearance, specifically in terms of color, clarity, and how it performs when it comes to lighting. The larger stones thus bear deeper color and higher clarity; the facets, on the other hand, are cut to reflect light. Therefore, the round brilliant diamond continues to be a preferred shape by those who desire classic beauty and scintillating fire in their engagement rings.
|
MM Size |
Carat Weight |
MM Size |
Carat |
MM Size |
Carat |
|
0.8 mm. |
0.0025 ct. |
4.5 mm |
0.36 ct. |
9.1 mm |
3.00 ct. |
|
1 mm |
0.005 ct. |
4.75 mm |
0.44 ct. |
9.5 mm |
3.35 ct. |
|
1.15 mm |
0.0067 ct. |
5.0 mm |
0.50 ct. |
9.75 mm |
3.61 ct. |
|
1.12 mm |
0.0075 ct. |
5.25 mm |
0.56 ct. |
10 mm |
3.87 ct. |
|
1.25 mm |
0.01 ct. |
5.5 mm |
0.66 ct. |
10.25 mm |
4.16 ct. |
|
1.3 mm |
0.01 ct. |
5.75 mm |
0.75 ct. |
10.5 mm |
4.41 ct. |
|
1.5 mm |
0.015 ct. |
6 mm |
0.84 ct. |
10.75 mm |
4.57 ct. |
|
1.75 mm |
0.02 ct. |
6.25 mm |
0.93 ct. |
11 mm |
4.91 ct. |
|
1.8 mm |
0.025 ct. |
6.5 mm |
1.00 ct. |
11.25 mm |
5.49 ct. |
|
2 mm |
0.03 ct. |
6.8 mm |
1.25 ct. |
11.5 mm |
5.85 ct. |
|
2.25 mm |
0.04 ct. |
7 mm |
1.30 ct. |
12 mm |
6.84 ct. |
|
2.5 mm |
0.06 ct. |
7.3 mm |
1.50 ct. |
12.25 mm |
7.26 ct. |
|
2.75 mm |
0.08 ct. |
7.5 mm |
1.67 ct. |
12.5 mm |
7.36 ct. |
|
3 mm |
0.11 ct. |
7.75 mm |
1.75 ct. |
12.75 mm |
7.52 ct. |
|
3.25 mm |
0.14 ct. |
8 mm |
2.00 ct. |
13 mm |
8.51 ct. |
|
3.5 mm |
0.17 ct. |
8.25 mm |
2.11 ct. |
14 mm |
10.49 ct. |
|
3.75 mm |
0.21 ct. |
8.5 mm |
2.43 ct. |
15 mm |
12.89 ct. |
|
4 mm |
0.25 ct. |
8.7 mm |
2.50 ct. |
16 mm |
16.06 ct. |
|
4.25 mm |
0.28 ct. |
9 mm |
2.75 ct. |
17 mm |
18.00 ct. |
Princess Diamond Size Chart
Another worthy rival to round brilliant cuts is a Princess-cut diamond, which is perfectly square and attracts the eye with its clarity. They are also more economical to create due to the lack of waste generated from the rough diamond and are less costly for jewelers. The light performance of a princess-cut diamond is proportional to its size. Even the slightly smaller-sized princess cuts can provide a great deal of the appearance of sparkle due to the fact that more of the first raw diamond is maintained, while the more massive stones have more brilliant cuts. Due to this characteristic, the princess cut is affordable and regarded as unique and glamorous for anyone in search of a quality diamond.
|
MM Size |
Carat Weight |
|
1.5 mm |
0.015 ct. |
|
1.75 mm |
0.03 ct. |
|
2.00 mm |
0.06 ct. |
|
2.25 mm |
0.08 ct. |
|
2.50 mm |
0.10 ct. |
|
2.75 mm |
0.13 ct. |
|
3.00 mm |
0.18 ct. |
|
3.25 mm |
0.26 ct. |
|
3.50 mm |
0.29 ct. |
|
3.75 mm |
0.31 ct. |
|
4.00 mm |
0.39 ct. |
|
4.25 mm |
0.44 ct. |
|
4.50 mm |
0.50 ct. |
|
4.75 mm |
0.64 ct. |
|
5.00 mm |
0.75 ct. |
|
5.25 mm |
0.75 ct. |
|
5.50 mm |
1.00 ct. |
|
5.75 mm |
1.11 ct. |
|
6.00 mm |
1.25 ct. |
|
6.25 mm |
1.39 ct. |
|
6.5 mm |
1.50 ct. |
|
6.75 mm |
1.75 ct. |
|
7 mm |
2.00 ct. |
Cushion Diamond Size Chart
The cushion cut is intermediate between round cut and the shapes, which have well-defined corners such as princess or rectangle shapes. While it does look a bit old-fashioned, the cushion cut is currently one of the five most popular diamond shapes and can be found in many pieces of jewelry worn by royal and Hollywood families. Recent developments have made the cushion cut even better by reducing the culets that once deformed the cushion cut and reducing the facets so that they were finer. It is, however, important to note that as the size of a cushion-cut diamond increases, the faceting becomes even more apparent, and this has a positive impact on the clarity of the stone as well as the fire that comes out of it.
|
MM Size |
Carat Weight |
|
4.2 mm |
0.40 ct. |
|
4.9 mm |
0.50 ct. |
|
5.25 mm |
0.75 ct. |
|
5.5 mm |
1.00 ct. |
|
6 mm |
1.25 ct. |
|
6.5 mm |
1.50 ct. |
|
7 mm |
2.00 ct. |
|
7.5 mm |
2.50 ct. |
|
8 mm |
3.00 ct. |
|
8.5 mm |
3.50 ct. |
|
9 mm |
4.12 ct. |
|
9.5 mm |
5.09 ct. |
|
10 mm |
5.62 ct. |
|
11 mm |
7.44 ct. |
|
12 mm |
9.52 ct. |
|
13 mm |
12.66 ct. |
Emerald Diamond Size Chart
Emerald cut diamonds are rectangular and have blended corners with rounded edges; they are slightly different from the cushion form of cut. They are ideal for those who like retro-style accessories and may suit emeralds, whether natural or man-made. While emerald-cut diamonds are very beautiful, their unusual elongated form may possess slightly less brilliance as compared to other forms. Undefined Even the 25-carat emerald-cut diamond looks almost double its size due to the cut and geometry of the arrangement. This makes it a perfect choice for those who are looking for something that will stand out from the rest while retaining the air of elegance.
|
MM Size |
Carat Weight |
MM Size |
Carat Weight |
|
3x2 mm |
0.10 ct. |
10x7.5 mm |
3.00 ct. |
|
3.5x2 mm |
0.12 ct. |
9.5x7.5 mm |
3.21 ct. |
|
4x2 mm |
0.15 ct. |
10x8 mm |
3.79 ct. |
|
4x3 mm |
0.20 ct. |
11x9 mm |
5.21 ct. |
|
5x3 mm |
0.29 ct. |
12x8 mm |
5.34 ct. |
|
5.5x3.5 mm |
0.46 ct. |
12x10 mm |
6.00 ct. |
|
6x4 mm |
0.50 ct. |
14x8 mm |
6.25 ct. |
|
6.5x4.5 mm |
0.75 ct. |
13x9 mm |
6.38 ct. |
|
6.5x4.5 mm |
0.88 ct. |
14x10 mm |
8.48 ct. |
|
7x5 mm |
1.00 ct. |
13x11 mm |
9.13 ct. |
|
7.3x5.3 mm |
1.25 ct. |
14x12 mm |
11.26 ct. |
|
7.5x5.5 mm |
1.50 ct. |
16x12 mm |
14.22 ct. |
|
8x6 mm |
1.75 ct. |
17x13 mm |
16.50 ct. |
|
8.5x6.5 mm |
2.00 ct. |
9x7 mm |
2.50 ct. |
Oval Diamond Size Chart
The oval cut is preferred by lovers of unique and unfashionable products, which are different from most jewelry. It is longer in shape, which gives it a distinct appearance from other cuts while also making the pears appear thin on the hand, like the emerald cut. Oval cut diamonds, when well done and have the correct depth, provide light return and brightness, the same as round cut diamonds. Furthermore, more carat weight adds more brilliance to an oval cut diamond, hence making it a good choice when trying to balance between class and uniqueness.
|
MM Size |
Carat Weight |
|
4.5x3.5 mm |
0.21 ct. |
|
5x3 mm |
0.21 ct. |
|
5.5x3.5 mm |
0.33 ct. |
|
5x4 mm |
0.35 ct. |
|
6x4 mm |
0.50 ct. |
|
6x5 mm |
0.61 ct. |
|
6.5x4.5 mm |
0.65 ct. |
|
7x5 mm |
0.75 ct. |
|
7.7x5.7 mm |
1.00 ct. |
|
8x6 mm |
1.25 ct. |
|
9x6 mm |
1.41 ct. |
|
8.5x6.5 mm |
1.50 ct. |
|
9x7 mm |
2.00 ct. |
|
10x8 mm |
2.88 ct. |
|
10.5x8.5 mm |
2.50 ct. |
|
12x8 mm |
3.00 ct. |
|
11x9 mm |
3.85 ct. |
|
12x10 mm |
5.05 ct. |
|
14x10 mm |
5.81 ct. |
|
13x11 mm |
6.05 ct. |
|
14x12 mm |
8.21 ct. |
|
15x12 mm |
8.76 ct. |
|
16x12 mm |
9.32 ct. |
|
16x14 mm |
11.88 ct. |
|
18x13 mm |
12.86 ct. |
|
20x15 mm |
14.96 ct. |
Pear Diamond Size Chart
Pear-shaped diamonds contain a round cut with a marquise cut to bring out the best of both worlds. They are often lifted at the ends in a slanted and pointed manner, creating the opposed teardrop look that can add to the finger’s apparent length. Pear-shaped diamonds are loved for their light handling capability and brilliant light return. Although the pear diamond size chart can determine the size of the stone, the diamonds are cut in such a manner that they always remain shiny. These diamonds are commonly used for engagement rings and other pieces of jewelry mainly because of their unique and breathtaking teardrop shape that offers a more refined appearance than most other gemstone shapes.
|
MM Size |
Carat Weight |
MM Size |
Carat Weight |
|
3x2 mm |
0.13 ct. |
13x8 mm |
3.40 ct. |
|
4x2.5 mm |
0.18 ct. |
12x9 mm |
3.50 ct. |
|
4x3 mm |
0.21 ct. |
14x8 mm |
4.00 ct. |
|
5x3 mm |
0.25 ct. |
13x9 mm |
4.11 ct. |
|
5x4 mm |
0.35 ct. |
14x9 mm |
4.25 ct. |
|
6x4 mm |
0.50 ct. |
14.5x9 mm |
4.50 ct. |
|
6.5x4.5 mm |
0.60 ct. |
15x9 mm |
5.00 ct. |
|
7x5 mm |
0.75 ct. |
14x10 mm |
5.41 ct. |
|
7.5x5.5 mm |
0.85 ct. |
13x11 mm |
5.65 ct. |
|
7.7x5.7 mm |
1.00 ct. |
15x10 mm |
5.75 ct. |
|
8x6 mm |
1.25 ct. |
16x9 mm |
5.86 ct. |
|
8.5x6.5 mm |
1.50 ct. |
16x10 mm |
6.27 ct. |
|
10x6 mm |
1.75 ct. |
17x10 mm |
6.46 ct. |
|
8.7x6.7 mm |
1.80 ct. |
15x11 mm |
7.36 ct. |
|
9x7 mm |
2.00 ct. |
18x11 mm |
8.14 ct. |
|
10x8 mm |
2.50 ct. |
16x12 mm |
8.99 ct. |
|
11x7.50 mm |
2.61 ct. |
18x12 mm |
9.35 ct. |
|
11x8 mm |
2.70 ct. |
18x13 mm |
10.21 ct. |
|
12x8 mm |
3.00 ct. |
12x7 mm |
3.12 ct. |
Are All Diamond Size Charts the Same?
It is crucial to understand that not all diamond-size charts are the same. Another important thing to take into account is that it is not always correct to compare different sizes of diamonds because there is no single universally accepted diamond size chart. Some of the limitations include cut, depth, and table size as some of the parameters that can affect the size of the diamond.
- Shape: The outer form of the diamond affects the size appreciable to a larger extent. For instance, the round cut diamond will look bigger than a marquise cut diamond even if the two are made up of similar carat weight. This is because a round diamond has more or less equal weight distribution, while the marquise diamond is longer and slimmer in shape.
- Depth: Basically, the depth of the diamond determines its size. A diamond that is cut to a greater depth will appear to be larger than a diamond with similar carats. This is so because a deeper diamond has a relatively larger surface area and, as such, will reflect more of the incoming light.
- Table: The diamond size chart (mm) is the one that defines the width of the top of a diamond. Diamond that has a large table size will look bigger than one with a small table size due to coverage area.
Therefore, these are some parameters that are needed to evaluate the diamond size chart mm correctly. It is good to rely on a diamond size chart that will take into consideration shape, depth, and table size.
How to use a Diamond Size Chart?
Here are some useful tips for utilizing a diamond-size chart:
- There should be a chart that contains the shape, profundity, and size of the table of the diamond.
- Coals diamonds of similar sizes and measures how the weights of different carats compare with one another.
- Bear in mind that the size of the diamond can also be affected by its setting. These engagements are significant in influencing the appearance of the diamond, a diamond that is set in a solitaire or bezel will appear larger compared to a diamond in a halo setting.
- To clear any doubts over the diamond mm size chart, it is advisable to seek the service of a professional jeweller.
Conclusion
It is important to comprehend the diamond carat size chart when one has to make decisions on buying diamonds. These factors include the shape, depth, and size of the table, and by comparison, you are better placed to understand the actual size and look of different diamonds. One step is to compare diamonds of the same carat weight and understand how various settings might alter the impression of ring size.
It is also important to consult with a competent jeweler, as they can offer additional advice and recommendations. Therefore, after following these steps, you will be equipped with the knowledge to make the right choice of the desired diamond. For the best lab-grown diamonds, contact Everyday Diamonds to explore a range of exquisite options.
