What Are the Different Shapes of Diamonds

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What Are the Different Shapes of Diamonds?

Diamonds have been a treasured gemstone since being discovered in India thousands of years ago. Its very name is derived from the Greek language and means "unbreakable", thus symbolising its strength and reputation as the hardest mineral on earth. A diamond is also known for being a symbol of purity, which is due to its clarity and colourlessness. Commonly, a diamond ring is the choice for couples to become engaged because it is considered the most precious of all stones, and its strength is symbolic of the strong bond between the future bride and groom.

When searching for a diamond, whether as a loose gem or as a piece of jewellery, consumers should consider several factors to ensure their purchase is perfect. First, they should understanding the meanings behind different diamond shapes. Round cut, oval cut, and princess cut diamonds (as well as others) are all different and appropriate for different wearers and occasions. Also, and most importantly, they should confirm the quality of the diamond before committing to a purchase.

Different Diamond Shapes

Diamonds have many facets, which are the polished, flat surfaces of the gem. The arrangement and cut of the facets give diamonds their sparkle and inner glow. In contrast, the diamond's shape refers to the form outline that the gem possesses after it has been designed. There are many diamond shapes available, all of which have different numbers of facets, proportions, and dimensions. Each shape is unique and represents more than meets the eye. Knowing the variety of shapes that diamonds can take will help consumers make educated decisions before buying.

Round Cut Diamond

Round diamonds are the traditional choice for engagement rings. A classic diamond, the round cut brings out the most sparkle and brilliance in its facets. Those who choose round cut diamonds are often described as family-oriented. Women who don round diamonds on their fingers possess strong values and beliefs, as well as open and laid-back personalities.

Princess Cut Diamond

Another top choice in diamonds is the very contemporary princess cut. Either square or rectangular-shaped, this diamond has pointed corners with detailed facets, both of which contribute to the diamond's inner sparkle. Those who wear princess cut diamonds are spontaneous, trendy, and fashion-oriented. Because this shape is also known for its glittery, glitzy appearance, women who wear it are spotlight lovers and attention seekers.

Oval Cut Diamond

The oval cut diamond has a beautiful brilliance. The elongated shape accentuates the hand and provides a slenderising effect. This cut varies just slightly from the round cut diamond, and is for those who like to mix classic and modern styles. Women who wear an oval cut diamond are risk takers who are not afraid to stand apart from the crowd. Although they embrace their individuality, they are also dependable and responsible people.

Marquise Cut Diamond

The Marquise cut looks like an oval shape with pointed ends. When worn as a ring, it gives an elongated, slender look to the hand, just as the oval does. It also maximises carat weight, and looks much bigger than it really is; as such, it is often worn by women concerned with making impressions. Daring and adventurousness are typical qualities possessed by women who wear a marquise cut diamond.

Pear Cut Diamond

The pear cut diamond combines the softness of a round cut with the sharpness of the marquise. It resembles a teardrop in shape. Thus, it is just different enough to appeal to women who prefer to stand out from the crowd. Women who choose this cut tend to be ambitious and active. Even though they like to be involved in causes outside of the home, these women also have a strong sense of family.

Heart Cut Diamond

The heart cut diamond is fancy, and is best suited for true romantics who believe in love in all its forms. Women who wear heart cut diamonds are affectionate, sentimental, and feminine. They are also creative and inventive. Heart cut diamonds are chosen for engagement rings, yet these are also popular for pendants in other colours.

Emerald Cut Diamond

The emerald-cut diamond provides a timeless, classic look. It has long, clean lines, and is rectangular in shape. It boasts a larger, flat, top surface, and it has fewer facets, which adds to the clarity of the diamond. Its simple lines symbolise the organised and straightforward personalities of the women who wear it. Additionally, women who wear emerald cut diamonds are comfortable with themselves, and do not worry about impressing others.

Cushion Cut Diamond

Soft and romantic are words that best describe the cushion cut diamond. Resembling a pillow, it has rounded corners and larger facets, which increase the stone's brilliance. It is a popular choice for women who want to show off their individuality. Women who wear this cut are daring and confident.

Asscher Cut Diamond

Commonly called a "square emerald", the asscher cut diamond was made popular during the 1920s and 1930s. It is uncommon now, and worn by women who are meticulous. Those who like this cut find simplicity, elegance, and femininity to be of utmost importance.

The "Four Cs" of Diamonds

Once the shape of the diamond is chosen, consumers should look for other characteristics specific to the individual diamond. These characteristic are called the "Four Cs" of diamond selection. They are the colour, cut, clarity, and carat weight of the diamond. This system, which rates diamonds in each category, was created by the Gemological Institute of America (GIA). The GIA are known for creating the International Diamond Grading System, and although founded in the United States in the 1930s, the GIA’s strict methods serve as universal benchmarks by which all diamonds are judged internationally.


A pure, perfect diamond is colourless, and thereby allows the most light to be reflected through it like a prism. Diamonds differ in colour from colourless to light yellow.

The GIA's rating system to determine the colour of a diamond begins with the letter D, representing colourless diamonds, and ends with the letter Z, representing coloured diamonds. The table below lists the ratings and what each rating means.



D, E, F


G, H, I, J

Near colourless

K, L, M

Faint yellow

N, O, P, Q, R

Very light yellow

S, T, U, V, W, X, Y, Z

Light yellow

Even though many of the colour variations are not noticeable to the untrained eye, these subtle differences make a big difference in the diamond's quality and price.


The diamond's cut refers to its proportions, symmetry, and polish. A well-cut and polished diamond has precise angles that allow the most light to be reflected. Because the diamond's cut is so complex, it is often difficult to analyse, especially with an untrained eye.

The GIA's rating system to refer to the diamond's cut is split into five categories, which are: excellent, very good, good, fair, and poor. The diamond’s cut is graded on how well it interacts with light to create brightness, fire, and sparkle.


The diamond's clarity is determined by the location and number of flaws the gem has when viewed under ten times magnification. If a diamond has birthmarks, or inclusions, this means the inside of the gem has flaws. Some internal flaws include: cloudiness, cavities, and laser lines. If the diamond has blemishes, the surface is flawed. Superficial flaws include scratches, nicks, and chips. Because it is extremely rare to find a perfect diamond, consumers notice that most diamonds exhibit inclusions and blemishes. These characteristics cause light interference within the gem, thus reducing its brilliance.

The GIA’s grading system rates the clarity of a diamond, and therefore its brilliance. The grading scale has six categories, some of which are subdivided, for a total of eleven grades. These are listed in the following table.

Rating Abbreviation





No inclusions or blemishes visible using 10x magnification; extremely rare


Internally Flawless

No inclusions; blemishes only visible under 10x magnification; less than three per cent of diamonds are internally flawless



Very, Very Slightly Included

Inclusions are hard for a skilled grader to see even under 10x magnification; invisible to the eye when viewed without magnification



Very Slightly Included

Inclusions are easily visible under 10x magnification but can be considered minor; not visible to the naked eye



Slightly Included

Inclusions are viewable to a skilled grader using 10x magnification; SI1 flaws cannot be seen by the naked eye; SI2 flaws are visible to the naked eye if closely inspected





Inclusions are clearly seen under 10x magnification and often to the naked eye; affects brilliance

When a diamond is rated for its clarity, a gemologist analyses the size, number, nature, and position of the inclusions and blemishes. The less flawed the diamond is, the more rare and precious it is.


A carat is the measurement, in grams, of a diamond, or any other gem. One carat weighs 0.2 grams, similar to a paper clip. Each carat is split into one hundred points. Thus, a diamond of 75 points weighs 0.75 carats.

Even if a diamond is large, it does not mean it is the most sought after gem because the other "Cs" are also important in determining its total value.

Buying Diamonds on eBay

Once you have chosen the diamond shape you desire, check out eBay for a large selection. There are a plethora of choices available, featuring different colours, cuts, carats, and clarities, from sellers all over the world. Using eBay to purchase diamonds saves time and money.

Searching for Diamonds on eBay

One of the easiest ways to begin a search on eBay is to type in exactly what you are looking for in the search box on eBay’s home page. For example, enter the phrase "diamonds". This returns a list of items, which can in turn be narrowed down by selecting from among other categories. For a more refined search, use the Advanced Search feature.

Buy Diamond Rings on eBay with Confidence

Sellers and buyers get many benefits when shopping online with eBay. Signing up for an account is easy and allows both parties limitless shopping possibilities all under one, safe and secure username. Further, the eBay partnership with PayPal allows users to protect their personal financial information and save time when completing purchases. eBay is also convenient, since buyers can shop without ever leaving the comfort of their own homes.


Whether searching for a diamond ring or a diamond necklace, consumers want to know the significance behind the various cuts available. It is also helpful to understand the "Four Cs" of diamond evaluation. These include the colour, cut, clarity, and carat weight of the diamond. Although carat weight (i.e. the size of the diamond) is important, it is not the only determinant of a diamond's value. All four of the Four Cs contribute and work together to determine how much a diamond costs.

When ready to purchase a diamond, buyers should check out eBay's vast selection of all kinds of diamond rings, pendants, and bracelets, among others. Buying from one of the many sellers on eBay affords shoppers with a convenient and enjoyable experience.

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