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Cushion Diamonds


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£ 187

£ 1353930


The carat weight of a diamond refers to the weight of the stone rather than the dimensions, with one carat being equivalent to one-fifth of a gram. Units smaller than one carat are measured in points, with 100 points equal to one carat.




  (Multi Select) The diamond cut grade is one of the most important characteristics of the diamond and is determined by how well the diamond has been cut from the rough. The cut of the diamond is graded by its measurement of light performance which is generally known as the amount of sparkle the diamond gives off.


  (Multi Select) For white diamonds the colour is graded by the lack of colour the diamond has. Diamond colour grades can range from D to Z, grade D being the highest colour grade and the higher quality diamond.  At Steven Stone we only sell diamonds with a colour grading D-J.


  (Multi Select) Diamond clarty is measured by the number of imperfections or flaws a diamond has. These flaws are microscopic but have an effect on the value of the diamond. Gemmologists grade the clarity of the diamond by the amount of blemished and inclusions in the diamond. IF is graded flawless. SI1 is slightly included. At Steven Stone we only provide diamonds with a clarity grade of IF to SI1.


  (Multi Select) The polish grade refers to the smoothness of the diamond’s facets. If the grade of polish is Poor or Fair, the diamond may appear slightly blurred or dull. We recommend that the polish grades you should consider when selecting your diamond are either Very Good or Excellent.


  (Multi Select) Symmetry indicates how well the diamond facets are aligned. The symmetry of a diamond also determines the amount of light returned to the eye, i.e. the sparkle


  (Multi Select) Fluorescence is only detectable under strong ultraviolet light and occurs in varying degrees of colour. Fluorescence in diamonds is very rare; whilst cut, clarity, carat and colour all increases the price of a diamond; fluorescence actually decreases the price of a diamond, just as an inclusion does. Despite this, fluorescence in diamonds can make them appear whiter and closer to colourless. Blue fluorescent colouring can actually improve the colour of a diamond by a grade or two, whilst reducing the cost.


The table % of a diamond is calculated by dividing the width of the table facet by the width of the diamond. As one of the 4Cs cut is an important attribute to any diamond. The cut of a diamond is calculated by the depth and table amongst other factors. When comparing multiple diamond with the same cut it can be beneficial to refine the table value.




The depth % of a diamond is calculated by dividing the depth by the width of the diamond. The lower the depth %, the larger a diamond of a certain carat weight will appear, most of a diamond




A ratio is a measurement of how square or rectangular a diamond is. For all other diamond shapes, it’s very important as the ratio affects the beauty of the stone. To obtain an accurate ratio for any given diamond, simply divide the length by the width.



10,186  Cushion diamonds match your search.
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10,186  Cushion diamonds match your search.

Cushion Diamonds

One of the more vintage cuts, Cushion Cut diamonds are typically square or slightly rectangular with rounded corners. Although not as fiery as brilliant cut diamonds they have larger facets resulting in dramatic flashes of white light and spectral colours. Cushion Cut diamonds are perfect for those who favour vintage style engagement rings and work particularly well in a halo setting. Supplied with a GIA certificate to guarantee the quality of your stone.