Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, luminous beam that dances with quiet confidence. This semi-set engagement ring invites you to choose a 7 x 3.5 mm marquise stone, known for its tapered drama and ability to visually lengthen the finger.

Crafted in warm 18K rose gold, this mounting features a sleek, low-profile design with delicate accent settings that enhance the center stone’s clarity and structure. The band’s smooth finish and balanced weight ensure a comfortable fit for everyday wear, while the subtle accents add modern refinement without distraction.

Each ring is meticulously hand-finished in our Williamsburg studio, where precision meets thoughtful design. The lab-grown diamond you select will embody ethical clarity, reducing environmental impact without compromising brilliance.

Ideal for those who appreciate minimalist elegance with a distinctive edge, this ring pairs effortlessly with stackable bands or stands alone as a statement of refined taste. Its low profile makes it glove-friendly and unobtrusive for daily life.

Should you need resizing or guidance on selecting the perfect marquise cut, our Brooklyn studio offers personalized consultations to ensure your ring fits seamlessly into your lifestyle.

Explore this semi-set marquise engagement ring in person or begin your custom design journey online. At Haejin Jewelry, we combine expert craftsmanship with ethical materials to create lab-grown diamond engagement rings that reflect the spirit of Brooklyn’s creative heart.

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

Explore our Guides & Education and Stories & Lifestyle for diamond education, care tips, and real studio stories.