What Size Hoop Earrings Should You Buy? A 6mm to 15mm Guide

Jewellery guides

6mm or 15mm? The only hard decision when buying gold hoops.

Jewellery guides · 7 min read

Every hoop looks the same on a screen. The photograph is cropped to the ear, there's nothing next to it for scale, and a 6mm hoop and a 15mm hoop can end up looking identical in the listing. Then the box arrives and it's half the size you pictured.

Millimetres are the whole decision. This guide shows each size drawn to scale, explains what the measurement actually refers to, and helps you choose the one you'll wear every day rather than the one that sits in the dish.

What does the mm actually measure?

The millimetre figure is the inner diameter of the hoop — the width of the open space in the middle, not the outside edge and not the thickness of the gold. So a 10mm hoop measures 10mm across the hole, and sits slightly wider than that on the ear once you add the 1.4mm wire on both sides.

That's why hoops often look bigger in the hand than on a screen, and why two shops can list what looks like the same hoop at different numbers. If a listing doesn't say which measurement it's using, it's usually the inner diameter.

See each size to scale

Tap a size. All five are drawn to scale against each other, so the gap you see here is the gap you will see in the mirror.

Sizes, weights and prices

Size	Reads as	Weight per pair	Price
6mm	Barely there	0.37g	£144
8mm	Neat and visible	0.47g	£154
10mm	The everyday middle	0.59g	£164
12mm	Clearly a hoop	0.76g	£174
15mm	A statement, still fine	0.90g	£214

If you're buying one pair and can't decide, take 10mm. It's the size that reads as a hoop from across a room but still disappears under a jumper collar, and it's the one most people come back for in a second colour. All sizes use the same 1.4mm wire, so the larger ones look bigger without looking heavier: even the 15mm pair is under a gram of gold in total.

Huggie or regular hoop?

A huggie is a hoop that sits close to the lobe and "hugs" it, rather than hanging below it. The hinge closes onto a small post, so there's no wire to thread and nothing to lose in the bedsheets. That's the practical difference, and it's why a huggie tends to be the pair that stays in.

A regular hoop hangs and swings, which is lovely and also the reason it catches on jumpers, gets slept on and comes out at night. If you want an earring you put in once and stop thinking about, choose the huggie. If you want movement, choose a drop like the Double Chain Hoop and wear it on the occasions where you'll notice it.

Can you sleep in them?

Physically, yes: they're small, hinged and have no sharp edges, and the solid gold won't react. Piercers generally suggest taking earrings out at night once a piercing is fully healed, and if yours is new, follow whatever your piercer told you rather than this page.

Which gold colour?

All three are solid 18K, stamped AU750. The choice is about what's already in your ear and on your wrist, not about quality.

One rule worth keeping: match the metal in the same ear, and feel free to mix between ears or between ear and wrist. Mixed metals in one lobe read as accidental. Mixed across the body reads as styled.

Building an ear stack

An ear stack is just two or three pieces in a deliberate order, usually getting smaller as they go up. The huggie is the anchor: it's the piece with weight and shape, and everything else works around it.

Why solid gold matters in a piercing

An earring sits inside a hole in your skin all day. That's a different job from a necklace resting on top of it, and it's where plated jewellery causes trouble: the plating wears thinnest at the post, which is the part actually inside the piercing, and once it goes the base metal is in contact with broken skin. That's the usual cause of the sore, itchy lobe people blame on "sensitive ears".

Solid 18K gold has no coating to wear through. It's 75% pure gold, nickel-free, and it doesn't tarnish, so it can stay in through showers, swimming and the gym. It's the reason a good pair of hoops is a ten-year purchase rather than a six-month one — the same argument we make in our guide to gold karats.

The right hoop isn't the one you love in the photo. It's the one you forget you put in.

Frequently Asked Questions

What size hoop earrings should I buy?

For a first pair, 10mm is the safest choice: big enough to read as a hoop, small enough for every day. Choose 6mm or 8mm for a second or third piercing, or if you want something barely visible, and 12mm to 15mm when you want the earring to be noticed.

Is the mm the inside or the outside of the hoop?

It's the inner diameter, the open space across the middle. The hoop measures slightly wider overall once you add the 1.4mm gold wire on each side.

What's the difference between a huggie and a hoop?

A huggie sits close against the lobe and closes with a hinge, so it doesn't hang or swing. A regular hoop is larger and hangs below the lobe. Huggies are the more practical choice for everyday and overnight wear because there's nothing to catch or lose.

Are these sold as a pair or a single earring?

Every size is sold as a pair. If you want two different sizes for a stacked ear, order the two pairs and split them across both ears.

Can I wear solid gold hoops if I have sensitive ears?

Solid 18K gold is nickel-free and has no plating to wear away inside the piercing, which is the usual cause of irritation with cheaper earrings. If you have a diagnosed metal allergy, check with your piercer or doctor first.

Can you shower and swim in them?

Yes. Solid gold doesn't tarnish, so water, sweat and chlorine won't change the colour. Rinse and dry them after a pool or the sea, and give them an occasional wash in warm soapy water.