Diamond Size Visualiser
Carat weight alone doesn't tell you how large a diamond looks. Pick a shape and a carat weight below to compare relative size and millimetre dimensions side by side.
Round Brilliant · 1.0ct · ≈6.5mm diameter
These are typical figures for a well-cut stone of that shape and weight, not a guarantee for any specific stone — a deep or shallow cut of the same carat weight can look smaller or larger face-up. This view is scaled for relative comparison between shapes and weights, not calibrated to your screen's exact size. Always check a stone's own certificate for its actual measurements.
Related reading
Source: dimension figures consolidated from current trade-jeweller size-chart references (VRAI, BlueStone, Estate Diamond Jewelry) — the same figures published in our diamond carat size chart guide, linked above.