Diamond faces are defined by wide, prominent cheekbones, a narrow forehead, and a tapered chin. The goal when choosing glasses for this face shape is to add width at the forehead and soften the angular cheekbones — frames that are wider at the top or feature rimless and oval shapes work exceptionally well. Avoid narrow, geometric cuts that repeat the angularity already present in your face.
What Makes a Diamond Face Shape Unique?
The diamond face shape is one of the rarest and most distinctive. Its hallmark is the high, wide cheekbone line that tapers sharply both upward toward the forehead and downward toward the chin. This creates a striking, faceted silhouette — much like the gemstone it is named after. Because the widest point sits at the cheekbones, frames that add visual width above or below that midpoint create the most flattering balance.
Which Frame Shapes Work Best for Diamond Faces?
Oval and Round Frames
Oval and round frames are among the safest bets for a diamond face. Their curved edges echo the softness you want to introduce against the sharp angles of your cheekbones. A round frame with a generous lens height draws attention upward toward the forehead, evening out the overall silhouette. Look for a frame width that is at least as wide as the broadest point of your cheekbones.
Cat-Eye Frames
Cat-eye frames are a standout choice for diamond faces. The upswept outer corners naturally widen the forehead and temple area, counterbalancing the narrow top third of the face. Whether you choose a subtle flick or a dramatic wing, cat-eye styles add character and balance simultaneously. This shape works especially well for those who want a retro or fashion-forward aesthetic.
Browline and Semi-Rimless Frames
Browline frames — those with a bold upper half and a thinner lower portion — draw the eye to the forehead, visually broadening it. Semi-rimless styles achieve something similar: the defined top bar anchors attention above the cheekbones, creating a more proportionate look. These are excellent for professional settings where you want polish without drama.
Rimless Frames
If you prefer a minimal look, rimless frames are a smart option. Because they introduce almost no additional shape to the face, they avoid emphasising the angular cheekbones. The result is a clean, understated appearance that lets your natural features speak for themselves.
Which Frame Shapes Should Diamond Faces Avoid?
Narrow rectangular or small geometric frames tend to make the cheekbones appear even wider by contrast, which throws the face further out of proportion. Very small round frames can have a similar effect if the lens width does not clear the cheekbones. Deeply angular shapes — such as sharp hexagons or narrow aviators — can also accentuate the faceted quality of a diamond face rather than softening it.
Oval vs Cat-Eye vs Rimless: Which Is Best for You?
Oval frames are the most versatile and suit both casual and formal wear. Choose them if you want a timeless, low-maintenance style.
Cat-eye frames are best for those who want to make a style statement and are comfortable with a frame that has a clear personality. They read as fashion-forward and work particularly well for evenings or creative workplaces.
Rimless frames are ideal for minimalists or for situations where you want your glasses to be nearly invisible — job interviews, formal occasions, or whenever you want the focus entirely on your face.
Does Face Shape Change How You Choose Prescription Lenses?
Your face shape influences the frame, but your prescription influences which lens is practical inside that frame. High-prescription lenses tend to be thicker at the edges in minus powers and at the centre in plus powers. Oval and rounder frames with smaller lens diameters keep high-index lenses looking thin and discreet — a benefit for diamond faces who already suit these shapes. Ask your optician about high-index materials such as 1.67 or 1.74 index lenses if your power is above ±4.00 dioptres.
Choosing Sunglasses for a Diamond Face
The same principles apply when selecting sunglasses. Shield and wraparound styles that sit wide at the brow are flattering. Classic wayfarers with a wider top profile work well, as do round and oval sunglass silhouettes. Avoid very narrow pilot frames or angular sport wraps that sit at the cheekbone level and make that midpoint appear even more pronounced. A tinted or mirrored lens does not change the rules — the frame shape remains the deciding factor.
Quick Tips for Trying Frames Online
When shopping online, look for the stated frame width measurement (usually listed in millimetres as the total width) and compare it to your own face width. A frame that matches or slightly exceeds your cheekbone width will almost always look balanced. Many retailers now offer virtual try-on tools — use them, and if possible, use natural lighting rather than indoor yellow light for the most accurate preview.
