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CLIENT SERVICES

A Guide To Diamonds

Jessica has always been drawn to antique diamonds, each one cut by hand to enhance its unique beauty. Many JMc engagement rings feature antique diamonds, alongside the highest quality modern diamonds, including rare and innovative cuts.

The 5 C’s



Chances are you’re familiar with the four Cs: carat, cut, colour and clarity, used to grade diamonds and determine a stone’s value. At Jessica McCormack, we believe you should feel informed but never overwhelmed. For us, the fifth C - character - is the most important of all... and gives every Jessica McCormack ring its distinctive charm.

Character

We select every diamond, whether antique or modern, for its individuality and charm. We’ll help you navigate the technical details and select the stone that feels right.

We encourage customers to go beyond the technical details and choose the diamond that they feel drawn to most.

Carat



A carat is a standard unit to measure the weight of a diamond. One carat equals 200 milligrams. This can be divided into points, where 0.75 carats = 75 points. A diamond’s value varies according to its number of carats and its rarity. Diamonds may equal in weight but vary in price due to the difference in quality. This means that a smaller diamond with a high carat weight may be more valuable than a large diamond with a lower clarity, colour or cut. Our stones start at 0.10ct, and we can source any size stone...

Cut

Jessica loves exploring unusual and rare diamond cuts, each one sourced by an in-house expert for its quality and beauty. Whether featured in a signature design or a bespoke piece, these unusual stones are the starting point of an engagement ring that’s entirely unique.

Whatever her style, there is a diamond cut to suit. Our experts source the most beautiful, characterful examples of each. Signature designs can be made with diamonds ranging from 0.25 carats to as large as you dare.

Colour



Diamond colour actually means lack of colour. Diamonds are graded from D (colourless) to Z (light yellow). The closer a diamond is to colourless, the more extraordinary and rarer it is.

Clarity

Clarity refers to the presence, visibility, number and size of inclusions in a diamond and is graded from flawless to included. A diamond will reach a higher level of clarity depending on the flaws seen under the loupe. A perfectly pure diamond is extremely rare and priced accordingly.

All diamonds have imperfections called inclusions. These are formed deep within the diamond and occur naturally.

Each Jessica McCormack diamond is hand-selected for its unique qualities and guaranteed to come from legitimate sources, that are not involved in funding conflicts and are in full compliance with UN resolutions. All our diamonds come through the Kimberly process which ensures this.

The world of coloured gemstones



From verdant emeralds to vibrant rubies, mesmerising blue sapphires and spinels in every colour of the rainbow, Jessica McCormack looks beyond diamonds to create engagement rings rich with colour and character. Whatever size, shape, colour and type of gemstone you are dreaming of, our expert gemmologists can source a number of options for you to choose from. The possibilities are endless.

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