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Diamond Cuts: Updated 2021

Diamond Cuts: Updated 2021

Last updated: 06/07/2021 02:32 | 06/07/2021 11:38
Barbara Mitchell

Table of Contents

What is a diamond cut?Different diamond shapes impact price and face-up size.The round diamondOval-cut diamondsMarquise-Cut diamondsTrillion-shaped diamondsThe Oval Cut diamondThe Cushion Cut DiamondMarquise Cut DiamondThe heart shape diamondThe pear shapeThe rose cut is omittedThe world's top diamond cutting and polishing center is IndiaPolish describes the smoothnessHearts and ArrowsModified brilliantsThe Asscher cutThe classic rose cutDiamond cut grading standards

What is a diamond cut?

A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut. The most popular of diamond cuts is the modern round brilliant, whose facet arrangements and proportions have been perfected by both mathematical and empirical analysis. If a diamond is cut poorly, it will be less luminous. The process of diamond cutting has been known in the Indian Subcontinent as early as 6th century AD. By 1375 there was a guild of diamond polishers at Nürnberg.

Different diamond shapes impact price and face-up size.

Different diamond shapes impact price and face-up size. Round shape diamonds have the highest prices for all carat sizes. For a diamond budget of about $7,000, what size (G color, VS2) diamond could you get?

The round diamond

The round diamond would be about 1.0 ct, but you could get a fancy shape closer to 1.2 ct. The princess cut is one of the most popular diamond shapes and comes at a 25-35% discount. For clarity, SI1 and SI2 diamonds will still look great for an engagement ring. Read our recommendations for round-shape diamonds. Find this ring at James Allen.

Oval-cut diamonds

Oval-cut diamonds still look large in popular split-shank styles. Cushion cuts face-up about 8% smaller than equivalent rounds. Emerald-Cut Diamonds are 25-42% cheaper than equivalent emeralds, but they tend to show color. Emerald-cut diamonds have a slimming effect on the finger and are a great choice for an understated East-West ring. Pear-shape diamonds face-up 8% larger than rounds and cost 10-30% less.

Marquise-Cut diamonds

Marquise-Cut diamonds look great in both simple and intricate ring styles. Marquise-cut diamonds need to be protected by prongs to prevent chipping and snagging. An H color diamond will appear white when set in white gold, but an I or even J color can look great in yellow or rose gold. Radiant-cut diamonds are one of the most brilliant cuts a diamond can have.

Trillion-shaped diamonds

Trillion-shaped diamonds don't fit everyone's style, but they do make unique and eye-catching center stones. Fancy-cut diamonds can be difficult to find and expensive. James Allen and Blue Nile offer a wide selection of fancy diamond shapes. If you're not confident about judging the cut quality, check out for expert advice on finding the best diamond shape.

The Oval Cut diamond

The Cushion Cut diamond is an elegantly shaped diamond that has recently gained popularity. The Princess Cut diamond combines the liveliness of a Round diamond and the contemporary shape of an Emerald or Square Cut diamond to create one of the most brilliant fancy shapes of all. The Asscher Cut diamond is named after Joseph Asscher who developed the cut in 1902. The Oval Cut diamond has 57 or 58 facets with a large surface area to bring out it's brilliance. The Heart Shap Diamond is one of the most difficult diamond shapes to cut.

The Cushion Cut Diamond

The most popular diamond shape is the Round Brilliant, with it's fifty-seven perfectly aligned facets. The Cushion Cut Diamond has overtaken the Princess Cut in popularity. The Princess cut diamond is a real draw for those who are all about the angles. The Emerald Cut Diamond is one of the most timeless of all of the diamond cuts. The Princess Cut Diamond has a hall of mirror effect, more of a mirror effect than the total reflection that comes from a round.

Marquise Cut Diamond

It's recommended to aim for higher colours and clarities. Marquise Cut Diamond has the largest surface area of any diamond cut. The pear shape diamond brings a degree of old-school glamour to your jewellery. The Asscher is an unusual cut with a smaller table and cropped corners that really stands out when making it's way through our workshop. The Radiant Cut Diamond is cut between an emerald and a brilliant, you get a great combination of clean lines and brilliance.

The heart shape diamond

The heart shape diamond has a small but dedicated fan base, there is no mistaking the meaning behind it. diamonds are available in a variety of shapes and sizes. Wixon carries the largest selection of loose diamonds in Minnesota. We hope this information provides you with a basic understanding so you can confidently move through the process going forward on our website. The most popular diamond shape is the round diamond.

The pear shape

The pear shape gives fingers and hands a slimmer appearance while creating a soft and delicate look. The Asscher-cut is often mistaken for an emerald-cut due to their similar cut style, but they are square as opposed to rectangular. It is a popular cut in all types of jewelry, especially in engagement rings.

The rose cut is omitted

The rose cut is omitted, but it could be considered intermediate between the old single and Mazarin cuts. In or around 1476 Lodewyk van Berquem, a Flemish polisher of Bruges, introduced the technique of absolute symmetry in the disposition of facets using a device of his own invention, the scaif. The rose cut continued to evolve, with its depth, number and arrangements of facets being tweaked. Tolkowsky's model of the "ideal" cut is not perfect. Light can enter a diamond from many directions and angles.

The world's top diamond cutting and polishing center is India

The world's top diamond cutting and polishing center is India, which processes 11 out of 12 diamonds in jewelry worldwide. It employs 1.3 million people and accounts for 14% of India's annual exports. Internal brilliance is the percentage of incident light reflected back to the viewer from the rear (pavilion) facets. Scintillation is dependent on the size, number, and symmetry of facets, as well as the quality of polish. Diamond's fire is determined by the cut's crown height and crown angle.

Polish describes the smoothness

Polish describes the smoothness of the diamond's facets, and the symmetry refers to alignment of the facets. With poor polish, the surface of a facet may be scratched or dulled, and may cause a blurred sparkle. Some surface flaws are a result of defects in the natural stone. . The size of a diamond may also be a factor. Very small diamonds are usually given simplified cuts (i.e. with fewer facets. Smaller stones, or 'Melée' for large stones. Large-sized stones have many extra facets in the round brilliant cut. There are at least six "ideal cuts" that have been devised over the years, but only three are in common use as a means of benchmarking. The American Standard (also known as the American Ideal and Tolkowsky Brilliant) is the benchmark in North America.

Hearts and Arrows

Hearts and Arrows is used to describe the visual effect achieved in a round brilliant cut diamond with perfect symmetry and angles that exhibit a pattern of Hearts & Arrows. The Passion Cut's design can be considered the opposite of the Hearts and Arrows, as it eliminates the arrows.

Modified brilliants

Modified brilliants include the marquise, heart, triangular trillion, oval, and pear or drop cuts. Modern cutting technology has allowed the development of increasingly complex and hitherto unthinkable shapes, such as stars and butterflies. This section does not cite any sources. Unsourced material may be challenged and removed. Step-cut stones have their corners truncated, creating an octagonal outline.

The Asscher cut

The Asscher cut, a square modified emerald cut, is also popular. Because of the current vogue for brilliant and brilliant-like cuts, step cut diamonds may suffer somewhat in value. Mixed cuts share aspects of both (modified) brilliant and step cuts. They are meant to combine the weight preservation and dimensions of step cuts with the optical effects of brilliants. Other forms of the step cut include triangle, kite, lozenge, trapeze, and obus shapes.

The classic rose cut

The classic rose cut has a flat base and triangular facets rising to form a point. The modern mogul cut evolved from earlier faceting techniques originally used to disguise internal flaws in very large stones. It is rare, but still finds occasional use where it is less important to showcase a stone's internal clarity. The relationship between the crown angle and the pavilion angle has the greatest effect on the look of the diamond. The table ratio is very significant, as is the length of the lower girdle facets.

Diamond cut grading standards

Several groups have developed diamond cut grading standards for different proportions. ImaGem's VeriGem device measures light behavior of diamonds. DGLA in the US and Mumbai, India, PGGL in the and EGL-USA are both offering versions of this technology in 2008. Light behavior is important because it determines how well a diamond's facets interact with light. GIA classifies round brilliant cut diamonds with a cut grade ranging from Excellent to Poor. The GIA Diamond Cut Scale for standard round brilliant diamonds in the D-to-Z diamond color range contains 5 grades ranging from Excellent to Poor and is the definitive scale for classifying diamond cuts.

Barbara Mitchell | Stone Expert.


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