Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, confident sparkle that draws the eye along the finger’s natural line. This semi-set engagement ring foundation in 18K yellow gold offers a sleek, modern-minimal frame designed to highlight a 10 x 5 mm marquise center stone of your choosing.

Crafted with precise attention to structure, the band’s smooth finish and subtle taper ensure a comfortable fit for daily wear. The low-profile mounting keeps the diamond close to the hand, reducing snagging while allowing light to enter freely for maximum brilliance. Each piece is hand-finished in our Williamsburg studio, where expert jewelers inspect every detail before it leaves the bench.

Choosing a lab-grown diamond for this setting reflects a commitment to ethical jewelry—minimizing environmental impact without compromising on clarity or fire. The warm glow of 18K yellow gold complements the marquise’s dramatic shape, creating a striking contrast that balances modern clarity with timeless warmth.

Ideal for those who appreciate architectural elegance with a contemporary edge, this mounting suits slender to medium finger sizes and pairs beautifully with stackable bands or a simple wedding ring. Its streamlined profile fits comfortably under gloves and daily wear.

Should you wish to adjust the band size, resizing is available to ensure a perfect fit without disrupting the ring’s clean lines.

Visit our Williamsburg studio to explore this semi-set marquise engagement ring in person or begin your custom design journey online. Haejin Jewelry combines expert craftsmanship, ethical sourcing, and Brooklyn’s creative spirit to bring your vision to life with clarity and confidence.

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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