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We understand that purchasing high value, supreme quality diamond jewellery online is something with which not everyone will be comfortable. Our products and educational videos are an excellent way of browsing our array of products, however, you may still want to view each item in person in order to feel more comfortable with exactly what you are buying and to make your experience a more pleasurable and personal one.

Our easy-to-follow booking system enables you to simply select the item(s) you would like to see in our showroom, along with a date and time, convenient for you.

Please note that although our showroom houses a vast array of our products, it may not have every single item in stock. In order to avoid disappointment, please be sure to input the product ID of the item you would like to see. Should any item you choose be out of stock, we will contact you to discuss alternative options.


Book An Appointment

Located in the heart of London’s jewellery district, Hatton Garden, our showroom houses an impressive array of samples and our expert consultants will be on hand to provide you with information on our products as well as guidance and advice to help you choose the piece that best suits your requirements.

A member of our team will call you to confirm that your appointment time has been reserved.

Contact Details:
Call Us On
UK:   020 8004 8538
Outside of UK:  + 44 (0)20 8004 8538
Find Us At:

Wonderfully Diamonds

(Offices)  27 Old Gloucester Road,
London, WC1N 3AX.
(Showroom Only) Hatton Garden,
LondonEC1N 8SB 
Opening Hours: 

Mon - Thurs 

Closest Stations: 

Farringdon (Underground and Rail)

Chancery Lane (Underground)

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Diamond Buying Guide

diamond engagement ringBuying a diamond ring is a special moment, whether it is for you or your loved one. Diamonds are something you will always treasure and therefore worth taking some time to ensure you make the right choice. With a large selection of diamonds and meticulously designed, handcrafted rings, we are here to help you find the perfect diamond ring. 





The first step in selecting a diamond ring often involves choosing the shape, therefore it is worth taking a few minutes to go through our comprehensive guides on how to choose the perfect diamond ring. Please note that the shape of a diamond is often referred to as "cut", for example, round cut or emerald cut. The "cut" in this context should not be confused with the term of diamond cut, which refers to how precise angles and alignment of the facets and how they affect the appearance of the diamond. From the classic round brilliant cut, to the eccentric heart cut, each shape specifically reflects the personal taste of an individual and each diamond from Wonderfully Diamonds is meticulously cut to highlight a diamond's best features.

diamond shape - round cut


The round brilliant cut diamond is the most popular diamond shape, accounting for more than 75% diamonds sold in the world. As the name suggests, the round brilliant cut has more fire and brilliance than any other diamond shape. With 58 facets divided amongst its crown, girdle and pavilion and a typical ratio between 1.00 and 1.02, this cut offers the ideal balance between cut, colour and clarity.

For almost 100 years, diamond cutters have been utilising advanced theories of light behaviour and precise mathematical calculations to optimise the fire and brilliance in a round diamond.




diamond shape - princess


The Princess cut is a classic and elegant shape, a square brilliant cut with sharp, uncut corners. It is the most popular shape after the round shape. This shape is an ideal way to capture the brilliance of the diamond. With typically 76 facets, the Princess cut can disperse more light through the stone, making it more brilliant than any other square and rectangular shaped stones. The Princess cut is most flattering on a hand with long fingers due to its unique squared shape. The Princess cut is sometimes referred to as Square Modified Brilliant or Rectangular Modified Brilliant if it has a ratio greater than 1.05. A Princess cut is more likely to show colour tints and we recommend you choose Princess cut diamonds with a minimum colour of H, clarity of VS2 and very good cut. If you have a modest budget, look for a Princess cut with a minimum colour of I, clarity of SI1 and very good cut.






diamond shape - Emerald


The Emerald cut is a rectangular shape with truncated corners. It is known as a step cut as its broad, flat planes resemble the steps of a staircase. It has vintage charm and glamour and it is one of the first cuts to be used in jewellery design. The number of facets in an Emerald cut may be between 50 and 58. Due to its larger openness of the cut, this shape highlights the clarity of a diamond. It is recommended that higher grades of colour and clarity should be selected for this shape of diamonds. Emerald cut diamonds can vary in how rectangular they are, which is determined by the length-to-width ratio. The classic emerald cut shape normally has a ratio between 1.30 and 1.50. The ideal ratio for the Emerald cut diamond is 1.40, which emphasises the beautiful parallel line facets and blocked corners. Wonderfully Diamonds experts recommend a higher clarity grade for Emerald cut diamonds due to its open facets, generally VS2 and above for GIA and VS1 and above for EGL.






diamond shape - Asscher


The Asscher cut diamond is a stepped cut similar to the emerald cut but in a square shape, therefore it is often called the 'square emerald cut'. This cut has typically 58 facets or 72 and the standard ratio is between 1.00 and 1.05. The Asscher cut is a fascinating cut. Its deep pavillion, wide step facets and deep clipped corners creates a 'Hall of Mirrors' effect. Wonderfully Diamonds recommend you to select an Asscher cut diamond with a higher clarity - VS2 and above for GIA and VS1 and above for EGL.







diamond shape - Marquise


The Marquise cut diamond often looks larger than other shapes of the same carat weight. The length of the marquise shape makes fingers appear long and slender. The Marquise cut is also referred to as the 'Navette' shape, meaning 'little boat', reflecting its boat shape of the diamond. The Marquise brilliant cut is typically comprised of 58 facets and the number of pavilion facets may vary from 4 to 6, 8. When choosing a marquise cut diamond, make sure the angles of the diamond have been properly cut to avoid a 'bow-tie effect', where light passing through the diamond casts a shadow across the central facets of the diamond. 

Due to the shape of the marquise, the overall clarity and colour of the diamond should be of high quality in order for the Marquise to look its best. 






diamond shape - HeartHEART SHAPE

The Heart is a considered a symbol of love and the Heart cut is undoubtedly the most romantic shape of diamonds. The heart cut diamond is the ideal way to balance brilliance and fire with its unique characteristics and striking style. The traditional heart-shaped diamonds have a length-to-width ratio of 1.00, which is considered most pleasing to the eye. Wonderfully Diamonds recommend you choose a Heart shaped diamond with a good overall quality, which has a minimum colour of G, clarity of SI1 and very good cut.







diamond shape - Radiant


The Radiant cut diamond is a popular choice for engagement rings and wedding rings, with a signature look of trimmed corners. Radiant cut diamonds can differ in its rectangularity, ranging from rectangular to almost square looking. Wonderfully Diamonds recommend you consider optimum colour and clarity when choosing a Radiant cut diamond, as its large facet will show imperfections easily. A minimum G colour and VS2 clarity and very good cut is highly recommended.







diamond shape - Cushion


The Cushion cut has been used in diamond jewellery for over a hundred years, also known as “pillow cut”. With rounded corners and large facets, the Cushion cut is not as fiery in its brilliance, but its classic style definitely makes it a stunning choice for a diamond engagement ring. Wonderfully Diamonds recommend a Cushion cut diamond with a minimum colour of H, clarity of VS2 and very good cut.








diamond shape - Oval


An oval cut diamond has similar shape to a round brilliant cut diamond. Its length accentuates long, slender fingers, thus this shaped diamonds are a popular choice for women with small hands or short fingers. A higher grade of clarity and colour is recommended as inclusions can be difficult to hide. Wonderfully Diamonds recommend you choose an Oval cut diamond with a colour G and above, minimum clarity of VS2 and very good cut.








diamond shape - Pear


The Pear cut diamond is also called Teardrop because of its pointed point and rounded end. This unique shape combines the features of the Oval and Marquise shapes with the brilliance and fire of the Round cut diamond. The pear shaped diamond is a popular choice for a variety of diamond jewelleries. Wonderfully Diamonds recommend a Pear cut diamond with a minimum colour of H, clarity of SI1 and very good cut.





4 Cs


Carat refers to the weight of a diamond, not the size. How much does one carat weigh? One carat equals 0.2 grams or 200 milligrams. Please note that carat should not be confused with ‘Karat’, which refers to the purity of gold. Carat does not necessarily reflect the size of the diamond, as there are other factors that affect the size of a diamond – the distance across the top of the diamond and the diamond’s cut grade. Diamond shapes also have an impact on how large an individual diamond appears. Elongated shapes tend to look bigger than round shaped diamonds of the same carat weight.

What carat weight should I choose?

When choosing a diamond for a ring, it is important to consider the setting style, her finger size and your budget. The diamond may appear different in size depending on the type and proportion of the setting. Slender and streamlined settings enhance the prominence of the diamond, making it appear larger than the solid settings. It is also worth considering the finger size. The slender the finger, the larger the diamond will appear.  If you have a strict budget and you prefer a larger carat weight, Wonderfully Diamonds recommends you choose a diamond with a lower grade in Colour and Clarity and a good Cut.


cut grade

Cut is the most important characteristic of a diamond as it determines a diamond’s brilliance, fire and overall sparkle. Diamond cut should not be confused with diamond shape. Diamond shape refers to the outward apperance of the diamond, while diamond cut refers to the diamond's light performance. A diamond's brilliance, fire and sparkle are greatly determined by how well the diamond is cut. In a well cut diamond with the right proportions, light enters through the top of the diamond, reflects from one side to the other and bounces back out of the diamond.



The highest grades of polish and symmetry allow it to reflect almost all light that enters the diamond and offers the most sparkle and fire.   


A diamond with Very Good cut reflects almost as much light that enters the diamond as an Ideal Cut diamond. The difference between the two is almost indistinguishable to the naked eye, therefore the Very Good cut offers great value for money.


A diamond with Good cut reflects most light that enters but not as much as a Very Good cut diamond. It is a more affordable option than a Very Good cut.


A Fair cut diamond is still a quality diamond but offers less brilliance and fire than a Good cut.


This diamond cut is generally a diamond that has been cut too shallow or too deep. A diamond with a Poor cut loses most of the light out the sides or bottom, and is much cheaper than other diamond cut grades.

If you are looking for the finest quality, Wonderfully Diamonds recommend an Ideal cut diamond. For best balance between quality and cost, choose a Very Good cut for your diamond ring. Wonderfully Diamonds only supplies diamonds with a cut grade of Very Good and above. 


diamond colour

Diamond colour actually refers to a diamond's lack of colour. Many diamonds exhibit certain hints of yellow, which acts like a filter and diminishes the spectrum of colours emitted. The colour of a diamond affects greatly on its value - the less colour in the diamond, the more valuable. 

Wonderfully Diamonds only sells diamonds with a colour grade of D-J. Diamonds graded D-F colour are considered as Colourless, which are typically very rare and expensive; diamonds with G-J are considered as Near Colourless, with colours that are undetachable to the unaided eye but offer great value for money.  


clarity chart 


Flawless, Internally Flawless. Extremely rare. IF and FL are both flawless from the inside but IF diamonds contain surface inclusions.



Very Very Slightly Included. Very difficult to see inclusions under 10x magnification. An excellent clarity grade and is almost as rare as the IF clarity.


VS1, VS2

Very Slightly Included. Inclusions are not usually visible to the unaided eye, and difficult to spot under 10x magnification. An excellent clarity grade yet less expensive than the VVS grades.


SI1, SI2

Slightly Included. Inclusions are visible under 10x magnification and may be visible with the unaided eye. The SI grades offer great diamond value.


I1, I2, I2

Included. This grade of diamonds have inclusions that are visible with the unaided eye. Wonderfully Diamonds recommend choosing SI2clarity diamonds or above.

Clarity is a measure of inclusions or blemishes on the surface or inside the diamond. Inclusions may be tiny, natural imperfections that occur in all diamonds. The fewer inclusions the diamond has, the higher the clarity grade. Of the four Cs, clarity is generally considered to have the least impact on a diamond's appearance. Many of the imperfections are microscopic, and do not affect a diamond's beauty in any discernible way. 

All Wonderfully Diamonds diamonds are clarity ‘SI2’ or above, which means these natural inclusions are completely invisible to the naked eye. Inclusions are naturally occurring in all but the finest diamonds. Wonderfully Diamonds suggest you select an “eye-clean” diamond, as diamonds of this clarity grade are less expensive than FL or IF diamonds. SI graded diamonds offer great value for money as their natural inclusions are not visible to the naked eye, and the loss of brilliance in comparison are barely noticeable. Speak to a Wonderfully Diamonds expert to review the diamond to ensure the imperfections are not visible to the unaided eye.

Still not sure? 

Our friendly team at Wonderfully Diamonds are always happy to assist you to find the perfect diamond jewellery and answer any questions you may have. Just get in touch