Lab-Grown Diamond Engagement Ring

Imagine the gentle curve of a marquise diamond catching the light as it elongates the finger with quiet drama. This semi-set solitaire ring invites you to choose a 10 x 5 mm lab-grown marquise center, its pointed ends drawing the eye along a slender silhouette.

Crafted in warm 10K rose gold, this mounting balances softness with strength, its delicate prongs designed to cradle the stone securely while maintaining a refined profile. The band’s smooth finish and subtle taper ensure comfort for daily wear, while the low-set design slips easily beneath gloves or alongside stackable bands.

Each ring is hand-finished in our Williamsburg studio, where precision meets thoughtful inspection to honor both form and function. The lab-grown diamond you select reflects a commitment to ethical jewelry, offering clarity and brilliance without compromise.

This solitaire is ideal for those who appreciate romantic understatement and a shape that elongates the hand, perfect for slender or medium finger sizes. The semi-set option allows you to personalize your ring with a diamond that speaks to your story.

Resizing is available to ensure a perfect fit, and our team is happy to guide you through care and selection during your visit or online consultation.

Explore this marquise solitaire in person at our Williamsburg studio or begin your custom design journey online. Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical values 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.

Finished for daily wear — a low-profile silhouette and polished edges help minimize snagging.