Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated points of a 12 x 6 mm marquise diamond, casting a slender, luminous silhouette across the hand. This semi-set engagement ring in 18K yellow gold offers a refined foundation to showcase your chosen center stone, framed by delicate accent details that enhance its graceful profile.

Crafted with a low-profile setting, the band sits close to the finger for everyday comfort and ease beneath gloves or rings stacked alongside. The warm glow of 18K yellow gold is hand-finished in Williamsburg, ensuring a smooth, polished surface that resists wear while highlighting the diamond’s tapered drama.

Each lab-grown diamond is selected for clarity and brilliance, reflecting a commitment to sustainable, ethical jewelry without compromise. The semi-set design invites personalization, allowing you to select a marquise cut stone that resonates with your vision.

Ideal for those who appreciate architectural elegance paired with practical wearability, this mounting suits slender to medium finger sizes and complements a variety of personal styles. Its subtle accents add dimension without overpowering the elongated shape.

Resizing is available to ensure a precise fit, and our Brooklyn studio welcomes you to explore the design process in person or online, where expert guidance supports your custom journey.

Haejin Jewelry crafts each piece with an expert eye for lab-grown diamond engagement rings, blending ethical craftsmanship with the vibrant creative spirit of Williamsburg, Brooklyn.

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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