Lab-Grown Diamond Engagement Ring

Imagine the subtle elongation of your hand as a 12 x 6 mm marquise diamond catches the light with a refined, tapered brilliance. This solitaire semi-set ring offers a sleek foundation crafted from warm 14K rose gold, designed to embrace the stone you select with a secure, low-profile setting that sits comfortably for everyday wear.

Each band is hand-finished in Williamsburg, Brooklyn, with precise attention to smooth edges and a balanced weight that feels natural against the skin. The mounting’s minimalist silhouette ensures it layers effortlessly with other bands or stands alone with quiet confidence.

Our commitment to ethical jewelry shines through the use of lab-grown diamonds, offering clarity and sparkle without compromise to sustainability.

Ideal for those who appreciate a modern yet understated statement, this setting complements the marquise’s dramatic shape while maintaining a glove-friendly, comfort-fit design suited for active lifestyles.

Should you need resizing, our Brooklyn studio provides expert adjustments to ensure a perfect fit without disrupting the ring’s clean lines.

Visit us in Williamsburg or begin your custom design journey online—where thoughtful craftsmanship meets your vision.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a local, personalized approach to custom design.

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.