How to Choose a Diamond for an Engagement Ring

Once you have decided on the metal and setting type for an engagement ring, you need to pick a diamond. The first point to consider is the shape and cut of diamond you want, whether it’s round, princess, emerald, oval or marquise the most popular for engagement rings. You can explore more on diamond shapes here. Here is a diagram of different diamond shapes available:

different diamond shapes

 

Once you have selected a diamond shape, you have to consider the four Cs of a diamond – cut, colour, clarity and carat weight. This is the part of the engagement ring that will most affect your budget. Diamond Cut A diamonds cut grade is basically a measurement of the light that passes through the diamond and determines its sparkle and brilliance.

diamond cut

Diamond cuts can be: Shallow cut – where the light escapes through the bottom of the diamond resulting in less sparkle. Deep Cut – Where te light escapes through the side of the diamond, also resulting in less sparkle. Ideal cut – where the light reflects through the top of the diamond allowing the diamond to sparkle with maximum brilliance. Diamond Colour Diamond colour for white diamond is graded highest for the lack of colour in the diamond. The rarest and most expensive diamonds, that are completely colour less have a grade between D to F. A grades I to J the colour in the diamond is only very slightly yellow tinted. Learn more about diamond colour here. Diamond Clarity Diamond clarity is graded on the amount of imperfections or impurities a diamond will have either inside the cut or on the surface, that can usually only be see through a microscopic lens. If a diamond is completely flawless it is graded IF and a clarity grade of VVS1 and VVS2 have excellent diamond clarity – virtually flawless. The lowest clarity grade is SI1, where the imperfections and marks may be clear to the naked eye. This chart shows the amount of flaws each clarity grade may have.

diamond clarity grade chart

 

Diamond Carat Weight Diamond carat weight is a measurement of a diamonds weight in carats, with one carat equal to 0.50 grams. Carat weight does not always reflect a diamonds size. If you want to gain a precise understanding of a diamonds size, we suggest you consider carat weight with two other options – the distance across the top of the diamond, which is measured in millimetres and the diamond’s cut grade because if a diamond is well cut the light reflected out the top will make it appear larger. Once you have picked a diamond, you need to choose a setting type – here is some advice on engagement settings.


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