Lab-Grown Diamond Engagement Ring

Imagine the subtle elongation of your hand as an 8 x 4 mm marquise diamond catches the light with its distinctive tapered points. This semi-set solitaire ring offers a refined foundation, ready to showcase your chosen center stone with a low-profile setting that rests close to the finger for everyday ease.

Crafted from warm 18K rose gold, the mounting is engineered for comfort and durability, its smooth contours designed to slip effortlessly beneath gloves or stack alongside other bands. Each curve is hand-finished in our Williamsburg studio, ensuring a seamless balance between strength and elegance.

Our commitment to sustainability shines through the lab-grown diamond clarity this ring embraces—ethical jewelry that honors both beauty and responsibility.

Ideal for those who appreciate modern geometry with a touch of vintage flair, this solitaire setting suits slender to medium finger sizes, enhancing the hand’s natural lines without overwhelming. Its secure prongs and modest profile make it a practical choice for daily wear.

Should you need resizing, our in-studio experts handle adjustments with care, maintaining the integrity of the setting and metal finish.

Visit us in Williamsburg to explore this semi-set marquise solitaire or begin your custom design journey online—crafted for your life, made in Brooklyn.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and local artistry.

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.