Location

CHESHIRE

150 Ashley Road, Hale,

Cheshire, WA15 9SA

0161 233 9977

MANCHESTER

Third Floor, St Johns Court, 19B Quay Street,

Manchester, M3 3HN

0800 080 3535

LONDON

5 St Christopher’s Pl, Marylebone,

London, W1U 1NA

020 33 271 271

Book a Consultation
Pick A Location
Pick A Service
Pick A Date

Pick A Time

 

Confirm Details

 

Booking Enquiry Sent

We Will Be In Contact Soon!

Your booking Enquiry Information

Please Note: Your Booking is not confirmed until a member of our team sends you a confirmation email.

Diamond Ratio

Choose diamonds with our recommended ratio to achieve the optimal beauty in engagement rings and diamond jewellery

Diamond Ratios Explained

Understanding diamond ratios is important, as they reflect how perfect the diamond’s shape is. Width to Length ratio indicates how square or rectangular a diamond is and is only irrelevant to the round brilliant diamond. For all other diamond shapes, ratio affects the beauty of the stone. To obtain an accurate ratio for any given diamond, simply divide the length by the width. See the chart below for our ratio recommendations for each diamond shape

Recommended Ratios, Table% And Depth% For Diamond Shapes

Shape Length To Width Ratio Table% Depth%
Round Brilliant N/a 55% – 60% 59% – 62.5%
Princess 1 To 1.03 64% – 75% 64% – 74%
Emerald 1.34 To 1.43 58% – 73% 65% – 74%
Oval 1.35 To 1.45 54% – 65% 58% – 68%
Pear 1.47 To 1.65 50% – 60% 58% – 68%
Radiant 1 To 1.15 50% – 60% 58% – 68%
Heart 1 To 1.05 50% – 60% 58% – 68%
Marquise 1.90 To 2.10 50% – 60% 58% – 68%
Cushion 1 To 1.15 50% – 60% 58% – 68%
Asscher 1 To 1.04 50% – 60% 58% – 68%