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How Do The Facets In The Round Brilliant Cut Diamond Create Its Famous Sparkle?

Posted by Lauren Jackson-Howard on Apr 18, 2019 4:06:18 PM

Winchester Collection round brilliant cut diamond

Investing your money into a diamond is a big step. There is so much to know and learn about diamonds to make sure you’re getting the best quality and the right look that you desire. Some diamonds are cut to sparkle, whereas others are cut to shine. If you're after a diamond with both these characteristics, then look no further than the round brilliant cut diamond!

 

Diamond basics

There are 4 main components that when put together, determine the beauty that your diamond has. These are more commonly known as the 4C’s and stand for:

  • Colour
  • Clarity
  • Cut
  • Carat

We have lots of content on the 4 C’s which will help you fully understand how they all contribute to the diamonds overall flair. For more info please see our blogs on:

VIEW OUR DIAMOND GUIDE

 

So, what is special about a round brilliant cut diamond?

A round brilliant cut diamond gives off the best fire (the rainbow colour that can be seen when light hits it) this is because it is cut in a particular way to show its full potential.

The diamond benefits from being cut to certain proportions, to allow the light that hits the diamond to reflect across and back out. If the diamond is not the perfect cut, light coming in can be lost, dulling the sparkle.round-cut-diamond-shapeWhen a stone is cut to ideal diamond proportions, light entering from any direction is fully reflected through the top of the diamond and dispersed into a sparkling and brilliant display.

The diamond is cut to create 57 (sometimes 58) perfectly symmetrical facets, which act almost like mirrors, reflecting the light across and out the top of the diamond. The facets are the polished edges that are created after a diamond has been cut.

 

The diamond cut sections

the crown and the pavilion

diamond crown and pavilion burrells

The Crown is made up of 33 facets. This includes:

  • 1 table
  • 8 star facets
  • 8 main (kite) facets
  • 16 upper girdle facets

The pavilion is made up of:

  • 8 pavilion main facets
  • 16 lower girdle facets

Sometimes, a culet facet can be added, which is situated at the bottom of the diamond where it makes a point.

A culet is more commonly used in old European cuts and old mine cuts over a century ago. They aren’t as popular nowadays as the larger the culet facet, the more visible it can be through the table facet (the smooth top one).

This makes the total number of facets in the pavilion either 24 or 25. Having the full 57 facets allows the light to be picked up from any angle, without having to polish too much of the diamond away, whilst keeping a good carat weight.


The girdle

The size of the girdle on your diamond also determines how good of a cut it is. This is the middle section of the diamond, separating the crown and the pavilion. The girdles thickness is very important as if it is too thin, it can cause damage to the stone. If it is too thick, it can increase the depth of the diamond, resulting in the pavilion becoming too deep, resulting in a poorer cut.

diamond girdle and culet burrells

There are many modifications of the brilliant cut itself, including the oval, pear, marquise, heart shaped and princess cut. These are more commonly known as a fancy cut. The facet sizes and amounts vary with these styles, but they still give off that bright sparkle when the light hits it.

For more information on the various diamond cuts and shapes, please see our Ultimate Guide to Diamond Cuts and our Ultimate Guide to Diamond Shape.

 

 

The diamond itself

If your diamond is certificated, then you will have a full graded report on your diamond. This includes the colour, clarity grade (including a full mapped out picture of the natural inclusions within the stone) and your carat weight.

There are also grades for the cut, polish and symmetry. The angle of every facet has been precisely calculated to reflect the light, creating a stunning, scintillating display from even the smallest amount of movement.

round brilliant cut diamond

The angle of every facet has been precisely calculated to reflect the light, creating a stunning, scintillating display from even the smallest amount of movement. Ideally, you want your percentages/angles to be within the numbers on the table below.

With the round brilliant cut diamond being such a classic, popular look, it is usually incorporated, if not the centre of attention within many items of jewellery. 

 

round brilliant cut showcase

Top 5 picks from Burrells

The best way to appreciate how bright this diamond cut shines, is by looking at it set in some jewellery! Here are our top 5 picks, to give you an all round experience of this stone. 

 

1 - The classic solitaire diamond ring

WINCHESTER COLLECTION SOLITAIRE PLATINUM 0.50CT 6-CLAW RING

£2,695

 

WINCHESTER COLLECTION SOLITAIRE PLATINUM 0.50CT 6-CLAW RING

burrells solitaire diamond ringsIf you’re popping the question or just accessorising yourself, this gorgeous 0.50ct round brilliant cut diamond is sure to turn heads. After all, a timeless classic such as the solitaire diamond, has stood the test of time for a reason! 

This particular diamond is from our Winchester Collection, exclusive to Burrells. To really understand how much sparkle and shine radiates from this stone, take a look at our YouTube video on the collection below. A diamond is best admired with movement!

 

 

 

 

 2 - Maximum shine and high impact

PLATINUM 1.00CT ROUND CUT DIAMOND THREE STONE RING

£4,550

 

PLATINUM 1.00CT ROUND CUT DIAMOND THREE STONE RING

burrells three stone ringsIf you really want a show stopping sparkle on your finger, then why not go for 3 diamonds instead of 1? You can easily maximise the glisten that your ring produces, by having 3 stunning round brilliant cuts together in one ring.

Trilogy rings have been really popular over the years as an engagement ring, or to celebrate a special anniversary!

 

 

3 - the perfect accentuating stones

18CT WHITE GOLD 0.85CT SAPPHIRE AND 0.19CT DIAMOND CLUSTER PENDANT

£1,450

18CT WHITE GOLD 0.85CT SAPPHIRE AND 0.19CT DIAMOND CLUSTER PENDANT

burrells fine necklacesThe brilliant cut can also be used to add that final flourish to a piece. With the focus being on the sapphire itself but the diamonds nicely complimenting in a halo shape, it's quite clearly a match made in heaven. 

Diamonds being clear and bright, allow themselves to be the perfect partner to any colourful gemstone. They won't overpower the vibrant colour of the centre stone, therefore adding a dazzling finish to the overall piece of jewellery. 

 

 

4 - sparkles for your earring wardrobe

18CT WHITE GOLD 0.40CT DIAMOND 18MM HOOP EARRINGS

£895

18CT WHITE GOLD 0.40CT DIAMOND 18MM HOOP EARRINGS

burrells full diamond earrings collectionIf you're more of a hoop person, then you might be intrigued by our next diamond choice! These stunning hoops with smaller, round brilliant cut diamonds will provide you with vibrant sparkle, that catches the light with the slightest movement.

With the 0.20ct of diamonds per earring set in white gold, the fire within can be clearly seen. The round brilliant cut works perfectly in a simple elegant stud as well, making it a very diverse option for earring jewellery.

 

 

5 - diamond bangles make a statement

18CT WHITE GOLD 1.07CT DIAMOND HINGED BANGLE

£2,995

18CT WHITE GOLD 1.07CT DIAMOND HINGED BANGLE

burrells diamond bracelet collectionDiamond Bangles are increasingly becoming more popular, and who can go wrong with this beautiful 18ct white gold bangle? With a row of round brilliant cut diamonds, highlighted by three larger stones, this is a unique piece that will certainly stand out from the crowd.

burrells-treeNow you’re ready to get out there and begin your search for the perfect diamond to add to your collection. We hope our expert advice has been helpful, but if you have any further queries please do not hesitate to contact us.

 

You may also like:

 Don't forget to check out our YouTube Channel for expert video content!

 

 

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