Lab Ruby Oval Three-Stone Trapezoid Diamond Ring | S925 Silver Adjustable Engagement Style

One large oval ruby, two trapezoid diamonds. The three-stone composition that has anchored the world’s most significant rings for a century.

An oversized oval-cut lab-grown ruby in vivid, deeply saturated rose-red sits in a six-prong setting flanked by two tapered trapezoid-cut diamonds — one on each side, their angled silhouettes tapering inward toward the ruby to create a three-stone composition of exceptional visual harmony. The trapezoid cut’s angled, step-faceted form creates a clean geometric transition between the oval ruby’s curved silhouette and the straight band, giving the ring a considered, architectural quality that a round or baguette side stone cannot achieve. The three-stone format is one of the most celebrated in fine jewellery, traditionally representing the past, present, and future — a composition associated with the great engagement ring traditions of the twentieth century. The open adjustable band fits any finger. At $135, this is the ruby ring that delivers three-stone engagement presence at an everyday price.

Why You'll Love It

• Three-stone composition — one oval ruby flanked by two trapezoid diamonds creates a ring with the visual balance and symbolic depth of the classic three-stone format; the three-stone composition is traditionally associated with past, present, and future, and is among the most photographed and celebrated ring formats in fine jewellery history
• Trapezoid diamond side stones — the tapered trapezoid cut’s angled silhouette creates a clean geometric transition between the oval ruby and the band; the trapezoid’s step facets create long, mirror-like reflections that frame the ruby with a precision and clarity that a round or baguette side stone cannot replicate
• Oversized oval ruby centrepiece — the oval cut’s elongated silhouette maximises the ruby’s vivid rose-red colour saturation and creates a commanding focal point; the large oval appears even more substantial within the three-stone composition, where the trapezoid side stones draw the eye inward toward the centre stone
• Open adjustable band — fits any finger without sizing; ideal for gifting or for those who prefer flexibility; the open band can be gently adjusted for a comfortable, secure fit
• Guilt-free luxury — lab-grown rubies share the same optical and chemical properties as mined stones, with a significantly lower environmental footprint

Product Details

• Metal: S925 Sterling Silver
• Centre Stone: Lab-Grown Ruby (Vivid Rose-Red), Oval Cut, Six-Prong
• Side Stones: Tapered Trapezoid-Cut Diamonds × 2
• Format: Three-Stone Ring
• Sizing: Open Adjustable (One Size Fits Most)
• Style: Engagement-Style Three-Stone Cocktail Ring
• Finish: High Polish
• SKU: R1607R-3

Please refer to our Ring Size Guide for sizing information.

At LabGrownPro, we believe fine jewellery should be beautiful, ethical, and accessible. Every piece is crafted with care — for you, and for the planet.