A hexagon diamond has a six sided face up outline. That outline alone does not tell you how the stone will look, because cutters can arrange the facets as a step cut, a brilliant style pattern or a custom design. Choosing well means matching the outline, the facet style and the setting to the stone you can actually see.
Shape and cut style are different decisions
GIA describes shape as the outline you see from above, and cut style as how the facets are arranged and angled. A hexagonal outline can therefore sit with quiet, parallel step facets or with many smaller brilliant style facets that return more sparkle.
Proportions vary as well. A regular hexagon has six similar sides. An elongated or long hexagonal outline stretches the stone and can read differently on the hand. Ask for the length and width on the report, then compare photographs or video of stones at different ratios rather than relying on the word hexagon alone.
Step cut or brilliant style hexagon?
GIA groups step cuts with concentric trapezoidal facets that create a hall of mirrors effect and an elegant gleam rather than busy sparkle. Brilliant cuts use many smaller kite shaped and triangular facets that gather and return light more actively. The same hexagonal outline can therefore look calm and architectural, or livelier and more broken up, depending on the faceting.
GIA also notes that the larger open facets of step cuts tend to show colour and clarity characteristics more readily, while brilliant style faceting can make small characteristics less obvious. Assess the actual diamond under ordinary lighting rather than adopting a fixed colour or clarity minimum for every hexagon.
Corners, girdle and everyday wear
Diamond is extremely hard, yet GIA explains that hardness is not the same as toughness. Stones can chip from impact, especially at corners, points and very thin girdle sections. A hexagon has six corners, so each one deserves attention in both the stone and the setting.
Ask about girdle thickness at the corners, and look for surface reaching inclusions near those edges on the report plot where one is available. GIA recommends protective settings such as bezels, partial bezels or V shaped claws for vulnerable corners. Hold detailed construction choices until you and the maker can review the specific stone. Our princess cut settings guide explains the same corner protection principles on another angular shape, and our guide to bezel settings covers full and partial bezels.
What to ask for before you decide
Ask for clear face up and angled images or video, the precise shape description on the report, and a note of whether the faceting is step cut, brilliant style or mixed. Symmetry and polish matter on geometric outlines because uneven sides are easy to see. GIA issues an overall cut grade only for standard round brilliants, so for a fancy outline you are judging the stone itself alongside polish, symmetry and proportions.
A hexagon can also sit with a point or a flat side uppermost. Preview both orientations at the design stage before anything is made.
We can source hexagonal diamonds, natural or laboratory grown, then design your ring around the chosen stone. Start with our bespoke engagement ring design page or contact us to discuss your brief.
For a wider look at less common outlines, read our guide to unusual diamond shapes beyond oval and round. If you are comparing six sided and eight sided outlines, our octagonal diamonds guide explains why outline and cut style need separate description.
Frequently asked questions
Is a hexagon diamond always a step cut? No. Hexagon describes the six sided outline. The stone may have step cut facets, brilliant style facets or another arrangement, so ask for images and a precise description.
Do hexagon diamonds chip easily? Diamond is very hard, but corners and thin girdle sections can chip from impact. GIA advises protecting sharp corners and avoiding very thin girdles. The setting and the stone’s actual geometry both matter.
Should I choose a higher clarity grade for a step cut hexagon? Step cuts can show inclusions more readily because of their broader facets. That does not set one grade for every stone. Judge the diamond you are offered under normal lighting with its report.
Can a hexagon diamond be worn every day? Many people do, provided the corners are protected in the setting and the ring is checked if a claw becomes bent or worn. Remove it for heavy work where hard knocks are likely.