The ratio of a diamond is the difference between the length and the width.
If you divide the length by the width you can determine a diamond’s ratio.
This measurement can be handy when determining what the diamond will look like before actually seeing it in person. For example, if you are considering purchasing an oval diamond and you want what is traditionally a perfect oval shape you will probably want a ratio of 1 to 1.30 or 1 to 1.40. This means the length is 30% to 40% longer than the width. If you prefer a longer or narrower oval you will want a length to width ratio of 1 to 1.50.
If you aren’t sure what the most desirable ratio is please check my recommendations on the diamond search page under recommended cut criteria. There is a tab for each shape and a ratio recommendation.
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