Lab-Grown Diamond Engagement Ring

Sunlight catches the slender silhouette of an 8 x 4 mm marquise diamond, casting a delicate, elongated sparkle that seems to stretch across the hand like a whispered promise. This semi-set solitaire ring invites you to choose your own center stone, offering a refined foundation in warm 18K rose gold that complements the diamond’s graceful taper.

Crafted in Williamsburg, the band’s subtle curve and polished finish ensure a comfortable, low-profile fit that slips easily beneath a glove or alongside a stack. The rose gold’s gentle blush enhances the marquise’s vintage-inspired shape, while the secure prong setting balances elegance with everyday wearability.

Each piece reflects a commitment to ethical jewelry: the setting is designed specifically for lab-grown diamonds, reducing environmental impact without compromising brilliance or clarity.

This ring suits those who appreciate a romantic silhouette with modern sensibility—ideal for slender fingers or anyone drawn to the marquise’s distinctive, architectural charm. Its adaptable design welcomes a variety of diamond cuts and sizes, making it a versatile canvas for your personal story.

Should you need resizing or guidance on selecting the perfect stone, our Brooklyn studio offers expert advice and a pressure-free experience tailored to your timeline.

Visit us in Williamsburg or begin your custom design journey online, where craftsmanship meets conscious luxury in every detail.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio devoted to lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a local, personalized approach to 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.