TL;DR: a pentagon diamond has five sides and a distinctive, almost heraldic outline. It is rare and makes a bold, original centre stone, best suited to modern designs. The five corners need protection, availability is very limited, and shape quality varies, so we would always suggest seeing the stone on video. Pieces start from £600.
What it looks like
Pentagon diamonds can be step cut or brilliant cut. Regular pentagons have five equal sides, and elongated versions look like a house or a shield. Step cuts look calm and glassy, and brilliant cuts look livelier.
Pros
- Truly unusual.
- Works well in modern designs.
- Gives a strong graphic outline.
Cons
- Five corners to protect.
- Very limited availability.
- Shape quality varies, so viewing the stone matters.
Settings
Claws at each corner, a bezel or a pentagonal halo all work. A plain, slim band keeps the focus on the shape. A bezel is the most protective, and corner claws show more of the stone.
Who a pentagon suits
A pentagon suits someone who wants a ring nobody else will have and who is comfortable explaining it. It tends to appeal to people drawn to architecture, graphic design and geometry, and to those who find a round or oval a little expected. If you prefer a quieter ring, a pentagon may feel too bold, and an oval or cushion might be a better fit. There is no right answer, only the one that feels like you.
Everyday wear
The corners are the weak points on any angular stone, because they can chip if the ring is knocked hard. A well made setting covers or cushions each one. Keep the ring away from heavy impacts, take it off for gym sessions and gardening, and have the setting checked from time to time. Our guide to protecting the corners of step cut stones explains the thinking, which applies to pentagons too.
Orientation
Point up, point down or sideways each give a different feel. A point up reads as a shield, and a point down can feel more dramatic. We can preview the options in a CAD render before anything is made.
Choosing a band
A pentagon already has a strong outline, so a simple band usually works best. A slim, plain band lets the stone stand out, while a delicate pave band adds a little sparkle without competing. If you plan a wedding band as well, tell us early, because the point or corners of the stone may affect how a straight band sits beside it. A shaped or gently curved band can solve that, and we can show both in a render.
How to choose
- Look at the stone on video, from the front and from the side.
- Check the proportions, because irregular sides can look odd.
- Decide on a setting that protects the corners.
- Choose the orientation in a render.
Sourcing
A pentagon is rare, so choice is limited. We discuss what is possible, and we tell you in writing what is realistic. For other unusual shapes, see unusual diamond shapes beyond oval and round.
Working with us
We work by video consultation and message, send sketches and CAD renders, and make nothing until you approve the design in writing. Standard making time is 5 to 6 weeks, varying with your location and how busy we are, and a rare stone can take longer to find. Overseas, the customer pays import duty and tax, and delivery is insured and tracked with FedEx. Our natural versus lab grown guide explains the choice of origin.
Frequently asked questions
Is a pentagon practical?
Yes, with corner protection.
Can a stone be cut for me?
Sometimes, depending on the rough. We would discuss it and say what is realistic.
Does it look smaller than a round?
It depends on the cut. Ask us to compare measurements.
What does a ring cost?
Pieces start from £600.