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Trapezoid side stones are timeless when it comes to engagement rings. Their elegant, angular silhouette adds both symmetry and dimension to a wide range of center stones, making them a perfect option for anyone seeking a refined yet striking three-stone look.
Whether step-cut or brilliant-cut, trapezoids can completely transform a ring’s overall aesthetic. Below, we’ll break down the different types of trapezoid side stones, how they compare, and what to consider when choosing them for your custom piece.
What Is a Trapezoid Side Stone?
Trapezoid side stones, also referred to as “traps,” are exactly what they sound like: are four-sided gemstones with one pair of parallel sides and two angled edges that taper inward, giving them their distinctive shape. Their signature tapered shape makes them ideal for flanking a center stone, adding width and definition while maintaining a smooth flow into the band.
These side stones come in two main faceting styles: brilliant and step-cut. The choice between them can dramatically shift the vibe of a ring, depending on how much sparkle or structure you’re after.


Brilliant vs Step-Cut Trapezoid Side Stones
Just like center stones, trapezoid sides come with options when it comes to faceting and the right choice depends on your desired look.
Brilliant-Cut Trapezoids
Brilliant-cut trapezoids are all about sparkle. With more facets and a light-reflecting structure, these side stones deliver maximum brilliance and play beautifully with round, oval, or cushion-cut centers. They add a touch of glamour without pulling too much focus from the center.


5.31 carat Cushion Cut Diamond Three-Stone Ring
Step-Cut Trapezoids
On the flip side, these stones feature long, clean facets that echo the structure of an emerald or Asscher cut. Instead of fiery sparkle, they offer a soft, mirror-like flash and a more architectural look. Step-cut trapezoids are a natural fit alongside center stones with similar faceting, especially emerald cuts, Asschers, and radiant cuts.


3.01 carat Emerald Cut Diamond Three-Stone Engagement Ring
Both styles offer something different — and it often comes down to the personality of the center stone and your overall aesthetic goals.
Common Trapezoid Design Layouts
You’ll most often see trapezoids in three-stone engagement rings, flanking a single center diamond. This classic setup offers symmetry and elegance while still letting the center stone shine.
In more elaborate designs, trapezoids may appear in five-stone rings or as part of a graduated side stone layout, sometimes combined with other tapered or geometric shapes like bullets or half-moons.
They also work beautifully in cathedral settings, where the shoulders of the ring rise up to meet the trapezoids, creating a seamless silhouette.
Things to Keep in Mind
When incorporating trapezoid side stones into your ring design, here are a few factors to consider:
Center Stone Shape
Trapezoids complement rectangular or elongated shapes best, but brilliant-cut varieties can also work well with round or oval centers. However, trapezoids are most popular with emerald cut centers.


5.07 carat Emerald Cut Lab Diamond Three-Stone Ring
Proportion Is Key
Make sure the side stones are scaled properly. Too large and they compete with the center; too small and they lose impact.


Color & Clarity Matching
Typically, side stones are matched one color grade and one clarity grade below the center to balance beauty and cost.
Setting Style
Trapezoids can be prong-set or bezel-set, depending on your preference. A custom setting can ensure the angles align perfectly with your center stone.


2.20 carat Asscher Cut Diamond Three-Stone Bezel Ring
Are You Falling into the Trapezoid Trap?
Trapezoid side stones are an elegant, versatile option that can add structure, width, and brilliance to your engagement ring. Whether you gravitate toward the clean lines of step-cut or the sparkle of brilliant-cut, trapezoids are a thoughtful way to elevate your design.
Considering incorporating trapezoid side stones into your ring? A design consultant can walk you through how different cuts and sizes will pair with your chosen center stone—and help you bring your vision to life. Schedule an appointment or email info@laurenb.com to start designing! Check out our Instagram for inspo!