Convert diamond’s millimeter (mm) size to carat (ct) size



If you have ever been wondering what’s the carat weight of your diamond jewelry, the below chart is something you can refer to. While being an estimate, rather then the precise guide, this simple chart (that includes round, square, oval, emerald, cushion, radiant, trillion, marquise, pear & baguette cut) can definitely get you started.

Round Cut Diamond Size Chart (MM to CT)

Shop Loose Round Diamonds

Princess Cut Diamond Size Chart (MM to CT)

Oval Cut Diamond Size Chart (MM to CT)

Emerald Cut Diamond Size Chart (MM to CT)

Shop Loose Emerald Cut Diamonds

Cushion Cut Diamond Size Chart (MM to CT)

Radiant Cut Diamond Size Chart (MM to CT)

Trillion Cut Diamond Size Chart (MM to CT)

Marquise Cut Diamond Size Chart (MM to CT)

Pear Cut Diamond Size Chart (MM to CT)

Baguette Cut Diamond Size Chart (MM to CT)

Looking for a loose stone to make custom designed jewelry, check out our Loose Stones Page. After a vintage or Art-Deco engagement ring? Shop Engagement Rings now.