Lab-Grown Diamond Engagement Ring

The elongated silhouette of the marquise diamond, measuring 6 by 3.5 millimeters, draws the eye with its tapered points and subtle drama, evoking a refined sense of movement across the hand. This semi-set three-stone mounting in 18K yellow gold offers a warm, luminous foundation, ready to cradle your chosen center stone with precision-crafted prongs that balance security and light play.

Each band is hand-finished in our Williamsburg studio, where the gentle curve of the shank ensures a comfortable, low-profile fit that slips easily beneath gloves or alongside other rings. The three-stone design allows for a personalized narrative—two side stones frame the center, enhancing brilliance without overwhelming daily wear.

Our commitment to lab-grown diamonds means your engagement ring embodies clarity and sustainability, reflecting a modern approach to ethical jewelry without compromise on sparkle or character.

Ideal for those who appreciate architectural elegance paired with artisan craftsmanship, this mounting suits slender to medium finger sizes and complements the marquise’s elongating effect. Its balanced profile supports stacking or solo wear with equal grace.

Should you need resizing, our in-house jewelers provide careful adjustments to maintain the ring’s integrity and comfort.

Explore this semi-set marquise engagement ring in person at our Williamsburg studio or begin your custom design journey online—crafted for life’s most meaningful moments.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, where expert craftsmanship and ethical sourcing converge in every piece we create.

See how your design comes to life with our Ring Design Online, or start a truly custom piece from scratch in our Williamsburg studio.

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