What Is a Three Stone Diamond Engagement Ring?
A three stone engagement ring features one focal center stone accompanied by two distinct side stones.
The side stones frame the center diamond and can add width, brilliance and visual detail to the ring without changing which stone serves as the primary focal point.
Three stone rings are also sometimes called trilogy rings. The three stones are traditionally associated with a couple's past, present and future, although the design can be chosen simply for its proportions and appearance.
Three Stone Engagement Ring Shapes
The shape of the center diamond has a major influence on the overall proportions of a three stone ring.
Round Lab Grown Diamond Engagement Rings provide a symmetrical center profile and classic brilliant-cut appearance.
Oval Lab Grown Diamond Engagement Rings create a longer center profile and can provide additional vertical coverage along the finger.
Emerald Cut Lab Grown Diamond Engagement Rings feature geometric step-cut faceting and elongated proportions.
Radiant Lab Grown Diamond Engagement Rings combine an angular outline with brilliant-style faceting.
Pear Lab Grown Diamond Engagement Rings introduce an asymmetrical tapered point and elongated silhouette.
Marquise Lab Grown Diamond Engagement Rings extend farther across their length and create a distinctive pointed profile.
Gema&Co's current Three Stone collection also includes Asscher, cushion, elongated cushion, heart, princess and trillion center-stone designs.
Three Stone vs. Toi Et Moi Two Stone Engagement Rings
Both styles use multiple prominent diamonds, but their design structures are different.
A three stone engagement ring has one focal center diamond accompanied by two side stones. The center diamond remains the primary focus of the design.
A Toi Et Moi Two Stone Lab Grown Diamond Engagement Ring instead features two focal diamonds that together form the central composition of the ring.
If you prefer a traditional center-stone hierarchy with additional diamonds framing it, a three stone setting provides that structure. If you prefer two stones sharing the visual focus, a Toi Et Moi design provides a different composition.
Choosing a Three Stone Diamond Engagement Ring
When comparing three stone engagement rings, consider the center diamond and side stones as a complete composition rather than evaluating only the center stone.
The center diamond's shape, carat weight and dimensions determine much of the ring's overall appearance. The proportions of the side stones then influence how gradually the design transitions from the center diamond toward the band.
Larger side stones create a broader three-stone composition, while smaller side stones place more visual emphasis on the center diamond.
Browse our complete Lab Grown Diamond Engagement Rings collection to compare three stone rings with solitaire, pavé, halo, hidden halo, bezel and Toi Et Moi two stone designs.
Lab Grown Diamonds & IGI Grading
Lab grown diamonds are real diamonds with the same fundamental chemical composition and crystal structure as mined diamonds. Their primary difference is origin: lab grown diamonds are created in controlled laboratory environments rather than forming naturally underground.
Gema&Co lab grown diamonds 1.00 carat and larger are IGI graded. Diamonds 0.99 carat and below are not individually graded.
Because a three stone ring contains diamonds of different sizes, grading status can differ between the focal center diamond and smaller side stones.
Customizing a Three Stone Lab Grown Diamond Engagement Ring
Three stone rings can be customized through the proportions of the center diamond, side stones, precious metal and overall setting.
The relationship between center and side-stone dimensions is especially important. Two rings with the same center-diamond carat weight can look substantially different depending on the size and proportions of their side stones.
For more extensive modifications or an original three stone design, read our Guide to Designing Your Own Engagement Ring.
Three Stone Lab Grown Diamond Engagement Ring FAQs
What is a three stone engagement ring?
A three stone engagement ring features one focal center stone accompanied by two side stones. Together, the three stones create a wider composition than a traditional single-center solitaire.
What does a three stone engagement ring symbolize?
Three stone engagement rings are traditionally associated with a couple's past, present and future. The symbolism is optional; many people choose the style primarily for its appearance and additional side-stone coverage.
Is a three stone ring also called a trilogy ring?
Yes. “Three stone ring” and “trilogy ring” can refer to the same general style featuring a center stone accompanied by two side stones.
Are all three diamonds the same size?
Not necessarily. In Gema&Co's three stone engagement rings, the center diamond is the focal stone and the two side stones accompany it. Their proportions can vary according to the particular design.
What is the difference between a three stone and a Toi Et Moi ring?
A three stone ring has one focal center stone and two side stones.
A Toi Et Moi Two Stone Engagement Ring uses two focal stones that together form the central design.
Which diamond shapes are available in three stone engagement rings?
Round, oval, emerald, radiant, pear, marquise, Asscher, cushion, elongated cushion, heart, princess, trillion and other diamond shapes can all create incredible three stone engagement rings. The perfect choice depends on the proportions and overall appearance you want from the finished ring.
Are Gema&Co three stone lab grown diamonds IGI graded?
Gema&Co lab grown diamonds 1.00 carat and larger are IGI graded. Diamonds 0.99 carat and below are not individually graded.
In a three stone ring, individual diamonds may therefore have different grading statuses depending on their respective carat weights.
Can I customize a three stone lab grown diamond engagement ring?
Yes. Gema&Co three stone engagement rings can be customized across available center-diamond sizes, precious metals and setting details. More extensive modifications and original designs can also be requested through the custom design process.
