DIAMOND SIZE GUIDE


Use the table below to compare approximate round diamond millimetre sizes with estimated carat weights.

How diamond proportions affect appearance


The appearance of a diamond is influenced not only by carat weight, but also by proportion, cut and the way the stone interacts with the hand.

Diameter

Defines the visible size of the stone.

Cut proportions

Influence brilliance and light reflection.

Setting & band

Change how large the diamond appears once worn.

A well-cut smaller diamond can sometimes appear brighter and more refined than a larger stone with poor proportions.

Need help choosing the right diamond size?


If you are unsure which proportion feels right for you, we can help guide you through different options and recommend a balance between subtle elegance and statement presence.