Diamond Size Chart. Millimetre Sizes.

Diamond size chart

Diamond Size Chart

Actual Sizes of Diamonds (mm)

Diamond size chart below for your reference, please scroll down.

Please remember to check out our monthly offers section for unmissable deals

Diamond sizes are often difficult to find. Many diamonds size charts are not always as accurate as they can be, and to be fair, diamonds sizes can vary depending on how the diamond is cut. The size of the diamond is often referred to as the spread of the stone. A good spread on a diamond often means it is a large size in comparison to the weight.

Certain cuts, even in round diamonds can produce unexpected weights. Take for example some Victorian or European Old Mine cuts, where it is common to find a much thicker make of diamond. Diamonds cut fairly deeply will exhibit less diameter for the specified weight. For example a 0.25cts stone might only weigh 3.7mm, similar to a well cut 0.20cts diamond. Knowing the correct size will enable you to judge whether the diamond you find is correctly sized. For example a carat diamond ring with a single round diamond should have a diamond diameter of around 6.4-6.5mm ideally.

Diamond size is not to be confused with diamond weight. Diamond size refers to the mm size of the stone. Typically on certificates, the stone is measured along the length, width and depth of the diamond. Here, we will offer a basic guide, with the main measurement being listed. This will at least offer you an idea of the size of the stone. Some diamonds weigh heavier due to the style of cut. Emerald cut diamonds for example are fairly thick step cut diamonds and tend to have a lot of weight in the back of the stone. Other stones such as trilliants can be fairly shallow and the size of the stone can often be larger than you would expect for the weight.

Princess cuts, one of the most popular cuts, have diamond sizes that are heavier than rounds which must always be remembered. There is no real rule of thumb to diamond sizes, and it is only from dealing with the stones over a period of time that the approximate sizes are easily remembered. This is always useful when particular ring mounts take particular diamond sizes. This sort of knowledge we find essential at Serendipity Diamonds, to provide prompt information to customers when they contact us.

Looking for loose diamonds? - email us for any size, shape, colour or clarity of diamond required. Loose diamond orders are welcomed.

Round Brilliant Cut Diamond Size Chart Princess Cut Diamond Size Chart

Round Diamond Size Chart Princess diamond size chart