How To Choose Your Perfect Diamond

Sparkling, Elegant, Beautiful

Choosing Your Perfect Diamond

Diamonds come in all shapes and sizes, and there is sure to be one to suit your taste, style and budget. When choosing a diamond, there are several essential aspects to be considered, commonly known as the four Cs: colour, clarity, cut and carat.

Diamond Colour

Diamonds are graded by colour – in most cases, the more colourless the diamond, the higher its value. The exceptions to this rule are the fancy coloured diamonds, such as pinks, yellows and blues.

GIA is the industry standard for measuring diamond colour. The letter D represents the most colourless diamonds, ranging up to the letter Z for a light yellow or brown diamond.

As you can imagine, colour grades are judged under controlled lighting and precise viewing conditions.

Diamond Colour Chart
Diamond Clarity Chart

Diamond Clarity

Clarity is a measure of the flawlessness of a diamond, and the clarity rating affects the beauty and price of each stone.
Virtually all diamonds have some imperfections known as inclusions and blemishes.

The industry standard rates all gem-grade diamonds on a scale from FL for flawless, to I3 for heavily included.

A diamond is described as ‘flawless’ if no external imperfections or internal flaws are visible under 10-power magnification. Flawless diamonds are scarce – and impacts the price accordingly.

Diamond Cut

The most critical of the four Cs is the cut of your diamond, as it not only governs its shape, but also the fire, life and brilliance it displays.

Diamonds are carefully cut and polished to emphasise the stone’s brilliance. Traditional diamond shapes include Brilliant, Princess, Oval, Marquise, Pear, and Emerald.

A diamond should work as a mirror, capturing the light and reflecting it from one facet to another before sending it back to the crown of the stone.

(The middle diagram shows how the light ideally bounces around when a diamond is cut well.)

Types of cut on diamonds
Diamond Cuts
Diamond Carat Chart

Diamond Carat

The weight of a diamond is measured in carats. One carat is equivalent to 0.200 grams – but weight alone doesn’t determine the diamond’s value.

When you compare two diamonds of the same weight, the value depends on the quality of each stone.

When you compare two diamonds of equal quality, the larger stone will usually hold considerably more value. Typically, a two-carat diamond will be worth more than twice as much as a one-carat stone.

engagement ring setting-diamond expert David Law-jpg

Diamond Expert David Law

I am David Law, and I have been buying and selling diamonds since the early 1980s.

When you entrust me to select a diamond for you, I will consider the four Cs among many other factors to ensure you experience the WOW factor when you first glimpse the choice of stones he’s personally selected for you.

All my diamonds are presented with a GIA certificate, reassuring you that they meet the highest standard of reliability, consistency and integrity.

Book a FREE exploratory design consultation

On a day and time that works best for you.

Work one-on-one with me David Law and explore all your options for creating your very own bespoke jewellery piece. From my studio close to Bond Street Station. At locations across London around the M25, leafy Hertfordshire and Surrey.

We can even design together face to face from the comfort of your home with a Zoom or Skype video call.

Whether you are looking for a classic or modern piece, I can help.

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I can't recommend David enough.

Understood the value of the piece to us both and walked me through each step of the process, welcoming input from a design perspective and offering ideas I would have not thought of.

The final piece is beautiful and I will definitely recommend to anyone who is looking for a bespoke service.

Philip Chambrin

5 Star rating on Trustpilot

David gave excellent guidance throughout this process. His wealth of experience ensured he was able to offer both practical guidance and also help to deliver a beautiful and unique design.

I would absolutely recommend David to anyone considering having any jewellery designed.

Michael Woods

5 Star rating on Trustpilot

My new fiancee and I are delighted with the ring David created. Having sent out several enquiries he was the first person to get back to me, and was clear and up-front on all aspects of the process from the outset. Despite having undoubtedly worked on far costlier projects, at no point did I feel that our job was any less important to him. The final piece is beautiful and even better than we expected - thank you David for your time and expertise!

Matt Cansick

5 Star rating on Trustpilot

David continues to exceed expectations with respect to being a truly personal jeweller. Having made an outstanding engagement ring for my wife over 10 years ago, he's made matching eternity rings after 5 and 10 years that have seamlessly matched. Timeless designs, effortless customer experience. Thanks David!

Rock Hawkins

5 Star rating on Trustpilot

My experience designing an engagement ring with David was excellent. He was flexible and patient as we worked towards a bespoke, custom and alternative engagement ring.

The wax printing of each iteration helps with the design phase and the final product was fantastic.

Christopher Aspden

5 Star rating on Trustpilot

My partner was over the moon with the necklace I gave her for her birthday, which was designed and made by David. He came to my office twice at my convenience, talked me through the process, was reasonable in pricing and extremely friendly. When I requested a last minute change, David obliged, went back and made the necklace exactly to my request. A great experience and fabulous outcome. I will be using David's services again!


5 Star rating on Trustpilot

David is very creative and thorough and sources only the best stones. He customises your pieces to suit you. He designed my engagement ring and all my wedding jewellery and they are all absolutely exquisite. My husband and I would not go anywhere else.

Sangeeta Desai

5 Star rating on Trustpilot

Meet David Law

Bespoke jewellery designer since 1985