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Diamond Carat

What does carat mean in diamonds?

A ‘carat’ is a diamond industry specific unit of measurement used to specify the weight of a diamond. One carat is equal to 200 milligrams, for example, a 5-carat stone will weigh 1 gram.

People often mistakenly assume that a diamond's size is synonymous with its carat weight, though that's not necessarily true. Like a human body the bigger the diamond is, the heavier it is likely to be, but other factors can also affect the size. For example, the way in which the diamond is cut will greatly affect its diameter and brilliance. Diamonds with a poorer cut, such as a change of depth or a thick girdle, will maintain their heavy weight but 'hidden' in the base of the diamond with less surface on top so they look smaller.

Given below is an approximate carat diamond weight chart and round diamond diameter size:

Diamond carat weight size chart

Diamond Carat Buying Tips

Looking to buy a diamond engagement ring now you’ve learnt what diamond carat means? Be sure read our top tips to ensure that you’ve effectively taken diamond carat into account!

  1. Choose carat weight to suit the wearer’s fingers - when buying a diamond ring you should choose a diamond carat weight that suits the wearer's fingers. Selecting a smaller carat weight for thicker fingers will not suit the fingers. Whereas, selecting a higher carat weight for thinner fingers will make the ring look very prominent.
  2. Consider size vs budget - do not simply go for higher diamond carat weight to obtain a larger size. Distribute your budget against diamond carat weight as well as other characteristics. A large diamond with poor clarity and colour unlikely to look as good as something with a lower carat but higher quality.
  3. Explore all carat sizes - at Shining Diamonds we give customers the flexibility to select from a range of different diamond carat weights ranging from 0.25ct to 1.00ct. This range of diamond carat weight is most popular, however if required we can do carat weight even higher than 1.00ct.

Now you’ve learnt what carat size means, please contact us at Shining Diamonds for a customised quote available on diamond finance or visit us at our Hatton Garden Jewellery store where we can help select the right diamond carat size for you.