Can I get a custom ring with a unique shape like a hexagon or oval?
Absolutely. I've cut hexagons, ovals, asymmetric free-forms, and once a client's cat silhouette in contour. The question isn't whether it can be done - it's...
Absolutely. I've cut hexagons, ovals, asymmetric free-forms, and once a client's cat silhouette in contour. The question isn't whether it can be done - it's whether the shape works for the stone, the setting, and the wearer's daily life.
The short version: yes. The longer version involves some honest talk about what geometry does to a stone's durability and how the ring will sit on a finger.
Oval cuts: the easy one
Ovals are straightforward. I've set dozens. They cut from standard rough, they're available in any carat weight you want, and they set cleanly in a four- or six-prong basket. An oval is just a stretched round brilliant - same basic facet pattern, same crown angle math. The one thing to watch for is the bowtie effect: a dark shadow across the middle when the stone is viewed from certain angles. Every oval has one to some degree. A well-cut oval minimizes it. A poorly cut one looks like a dirty window. Buy from a cutter or vendor who shows you a video of the stone in motion, not just a still under a diffused light.
I tell clients to expect about a 10 to 20 percent premium on an oval over a round of comparable carat weight and color, simply because ovals are cut for yield - more stone saved from the rough - but the really good ones are cut for brilliance, which eats into the yield. You get what you pay for.
Hexagons and other geometric cuts: it depends on the stone
Hexagons are a different conversation. You're not buying a stock shape; you're commissioning a custom cut of a specific piece of rough. That means the cutting time is longer - think four to eight weeks for a diamond, a few weeks for a colored stone - and the cost is higher because you're paying for the cutter's time, not a standard yield.
For colored stones, hexagons are lovely. I've used them in step-cut hexagon sapphires and emeralds - the parallel facets give the shape a clean, modern feel. The corners are the weak point. A hexagon has six points, all of them fragile if the stone is thin. I won't set a hexagon in a prong that wraps the corners; I use a bezel or a partial bezel that covers two opposing corners and leaves the other four exposed for light. That's a compromise I discuss with every client before we commit.
For diamonds, hexagons are rarer. You're asking a cutter to shape a diamond into a hexagon, which means losing more rough than a round brilliant or even an emerald cut. That loss is reflected in the price - expect a 40 to 60 percent premium over a round of similar weight and clarity. I've done exactly two hexagon diamonds in twenty-two years. Both were GIA graded, both around 0.8 carats, both set in platinum bezels. They were striking. They were also not cheap.
The shape that gives me the most trouble
Want a shape that's genuinely hard? A hexagon with a curved edge - think a hexagon that's been pinched on one side. I had a client named Priya last year who wanted a hexagon with one side slightly concave to fit against her adjacent ring. The geometry was a nightmare. The stone had to be cut with a shallower crown on the concave side to avoid a thin edge, and the setting had to be custom-fabricated with a basket that compensated for the asymmetry. It took twelve weeks. Priya loved it. I made maybe three dollars an hour on that ring. Worth it, but I'd only do it again for the right client.
What you need to ask your cutter or jeweler
If you want a non-standard shape, here are the questions you need to ask before anyone touches a piece of rough:
- Will this shape leave thin points or edges that are vulnerable to chipping? If yes, what's the protection plan - bezel, thicker prongs, a protective gallery?
- What's the yield loss? For a hexagon diamond, you're losing maybe 50 percent of the rough. For an oval, closer to 30 percent. That loss gets billed to you.
- Can you show me a wax or resin model of the stone in the setting before we cut? I insist on this. A CAD file is not enough - you need to hold the shape in your hand, see how it sits on your finger.
- What's the resizing reality? A hexagon with a straight bezel can be sized up or down one quarter-size, maybe half if the band is thick enough. A prong-set hexagon? Forget it. Oval is easier - standard sizing rules apply, usually one to two sizes with a full shank.
The honest bottom line
I'll cut anything that doesn't violate the laws of physics or good judgement. Ovals are safe. Hexagons are interesting. Asymmetrical free-forms are a conversation. The only shape I've turned down in the last decade was a heart - but that's a rant for another day.
Email me a sketch or a photo of the shape you're thinking about. I'll tell you honestly what the challenges are, what the cost range will be, and whether I'd do it differently.