Glasses guide

Glasses for a Diamond Face

A diamond face is narrow at the forehead, widest at the cheekbones and narrow again at the jaw. Glasses sit directly above the widest point, which creates a constraint no other shape has: the frame has to add width at the brow without adding any at the cheek.

That is why browline and cat-eye frames come up repeatedly for this shape. Both put their weight along the top and leave the lower half light.

Before shape: the fit rule

Whatever the shape, the frame should be about as wide as your face at the temples, and your pupils should sit near the centre of each lens — a little above centre is fine, low is not. A frame that fails this fits badly no matter how well the shape suits you.

The mistake to know about first

A deep frame that rests on the cheekbones. Because the cheekbones are the widest point, a lens reaching down to them widens the face at its widest place, and on a strong cheekbone the frame will also physically lift when you smile.

6 frame shapes that suit a diamond face

Every one of these carries the reason it works, so you can judge a frame that isn’t on the list.

Round

Barely there

Fully circular or near-circular lenses, usually in a thin metal or fine acetate.

Why it works: Curves soften a strong jaw and a straight cheek line, which is exactly what an angular face has too much of.

Oval

Barely there

Gently rounded and wider than tall — the least demanding frame shape there is.

Why it works: Softens angles without the commitment of a fully round lens, and stays narrow enough not to widen a face at the cheekbone.

Cat-Eye

Statement

Lifted outer corners with the weight of the frame concentrated along the top.

Why it works: Puts width and interest at the browline, which lifts a narrow forehead and draws the eye up and away from a heavy jaw.

Browline

Statement

A bold top rim across the brow with a rimless or fine lower half — the Clubmaster shape.

Why it works: All the weight sits high, adding width at a narrow forehead while the light lower half avoids bulking out the cheeks.

Wayfarer

Statement

Thick acetate with a slightly trapezoidal lens and a pronounced upper corner.

Why it works: Angular enough to contrast a soft face, and the depth of the lens balances the width it adds.

Rimless

Barely there

Lenses mounted directly to the bridge and temples with no surrounding frame.

Why it works: Adds almost no visual weight, so it never competes with a face whose own structure is already the feature.

What to think twice about

  • Deep lenses that touch the cheekbone
  • Narrow frames that sit inside the cheek width
  • Heavy bottom rims

The first two both draw attention to the cheekbone — one by covering it, the other by being visibly narrower than it. Heavy bottom rims add weight at the jaw, where a diamond face is already narrow and does not need the contrast.

Sunglasses

Cat-eye shades are the obvious pick and deserve their reputation here: they widen the brow, lift the outer corner and keep the lower edge clear of the cheekbone. Oval shades in a light metal work for the same reason. Avoid a deep wraparound, which sits straight on the cheek.

Not sure this is your shape?

Narrow forehead and narrow jaw with the widest point at the cheekbones. Angular and photographs sharply.

You can measure it from a photo in a few seconds, or read the hairstyle guide for this shape.

FAQ

Common questions

Why are browline frames recommended so often for a diamond face?
Because the weight is all in the top rim. That adds visual width at the forehead, which is the narrowest part of your face, while the rimless or fine lower half keeps the cheekbone area clear. It is a near-perfect match to the shape's requirements.
How do I know if a frame is too deep?
Put it on and smile. If the frame lifts or rests on your cheek, it is too deep — this is a fit problem rather than a style one, and it will annoy you daily. There should be visible space between the bottom rim and your cheekbone at rest.
Do I need frames that are wider than my cheekbones?
No — and trying to is the usual overcorrection. The frame should reach the width of your face at the temples, which on a diamond face is narrower than your cheekbones. Chasing cheekbone width gives you a frame that overhangs your head. The width you are adding belongs at the brow, and it comes from where the frame puts its visual weight rather than from sheer size.
Is a diamond face the same as heart-shaped for glasses?
No, and the advice is close to opposite at the top of the face. A heart-shaped face has a wide forehead and needs weight kept off it; a diamond has a narrow forehead and benefits from weight there. A browline frame is a good recommendation for one and a poor one for the other.