Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, casting a slender, confident shadow across the hand. This semi-set engagement ring invites you to select a 12 x 6 mm marquise center stone, whose tapered points and graceful curves evoke a striking blend of modern geometry and timeless elegance.

Crafted in warm 18K rose gold, the mounting features delicate accent stones that enhance the diamond’s clarity and structure without overwhelming its distinctive shape. The band’s smooth finish and low-profile setting ensure a comfortable fit for daily wear, while the subtle rose hue complements a variety of skin tones with quiet sophistication.

Each piece is meticulously finished in our Williamsburg studio, where expert hands inspect every facet and prong to balance durability with refined minimalism. The ethical clarity of lab-grown diamonds aligns with a commitment to sustainability, offering brilliance without compromise.

Designed for those who appreciate clean lines and confident form, this ring suits slender fingers and pairs effortlessly with stackable bands or a wedding band of your choice. Its low profile makes it glove-friendly and unobtrusive for everyday life.

Should you need resizing or guidance on selecting the perfect marquise stone, our team is here to assist with care and precision.

Explore this semi-set marquise engagement ring in person at our Williamsburg studio or begin your custom design journey online—where thoughtful craftsmanship meets modern romance.

Haejin Jewelry is a Brooklyn-based fine-jewelry studio specializing in lab-grown diamond engagement rings, blending expert craftsmanship with ethical sourcing and a deep connection to New York City’s creative spirit.

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

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