Gems · #963 biggest of 1,014
How big is a 1-carat diamond?
6.5 mm
A 1-carat diamond measures 6.5 mm. That's about 93 human-hair widths lined up end to end.
By the numbers
- That's 6.5 mm across — roughly the width of a few human hairs.
- You'd need about 262 of them stacked up to reach the height of an average adult.
- Roughly 93 human-hair widths could line up across it.
- Out of all 1,014 things in this collection, it ranks #963 by size.
Size comparison
How 1-carat diamond stacks up against things of a similar size. Tap any bar to explore it.
housefly
7.0 mm
grain of rice
7.0 mm
grain of rice
7.0 mm
sapphire ring stone
7.0 mm
1-carat diamond
6.5 mm
garnet
6.0 mm
ant
5.0 mm
mosquito
5.0 mm
peppercorn
5.0 mm
Bars use a logarithmic scale so everything fits — real differences are even more extreme!
Fun fact
It's so small that about 0.154 of them would fit across a single millimeter.
More in Gems
Tip: swipe, use the arrow keys, or scroll past the edge to jump between sizes.