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Emerald Cut Lab Grown Diamond Engagement Rings

Crafted by our jewelers with care and precision.

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Emerald Cut Engagement Rings — Timeless, Forever.

Elegant, timeless, and effortlessly sophisticated — an emerald cut engagement ring is perfect for those drawn to clean lines and quiet luxury. With its distinctive step-cut facets and open, mirror-like appearance, this vintage-inspired shape exudes refined clarity, offering a subtle, glassy gleam rather than a bold sparkle. Perfect for the minimalist at heart, its elongated silhouette flatters the hand and suits a wide range of settings — from sleek solitaires to Art Deco-inspired halos and everything in between.

At Cullen, each emerald cut ring is handcrafted in our Australian workshop using ethically sourced materials and lab-grown gemstones. Explore the collection online or begin your journey in one of our showrooms with a personalized design consultation — whatever the process, we're here to help you cherish your forever love with the ring of your dreams.

Find Your Perfect Emerald Cut Engagement Ring with Cullen

Cullen specializes in custom-made emerald cut engagement rings, handcrafted to mark one of life’s most meaningful moments in a style unique to your love.

Known for their timeless elegance and refined, understated sparkle, emerald cut rings are a stunning choice for those who value clarity, sophistication, and minimalist design.

Whether you’re after a sleek solitaire or a vintage-inspired halo of diamonds, our experienced jewelers and knowledgeable client advisors will guide you through every step of the journey — from your first consultation to the final polish.

Each ring is made in our Australian workshop using conflict-free and carbon-neutral lab-grown diamonds, as well as sustainable lab-grown moissanite or sapphires, so you can feel confident your ring is as ethical as it is exquisite to look at.

Need a little guidance? Don’t hesitate to contact us or book an in-person appointment with one of our friendly engagement ring specialists to begin exploring our collection of elongated cushion cut engagement rings in the United States.

Why Cullen

Worldwide Express Shipping No matter where you are in the world, your dream ring will go the distance. We proudly ship our wedding and engagement rings across the United States and internationally, ensuring your ready-to-ship engagement ring arrives safely and swiftly.

We offer free resizing on all engagement rings to ensure the perfect fit, whether you've chosen one of our ready-to-ship engagement rings or something uniquely your own.

Lifetime Warranty Our engagement rings are built to last a lifetime. Each piece is backed by our lifetime manufacturing warranty , giving you complete peace of mind.

Free Ring Customization From unique engagement ring designs to personalized band details, we offer complimentary customization so you can craft a ring that's truly one of a kind.

Handcrafted in Australia Every ring — including our ready-to-ship engagement rings — is designed and handcrafted in our Melbourne workshop with exceptional attention to detail.

Conflict-Free, Sustainable Materials We offer a variety of unique options — from ready-to-ship lab diamond engagement rings to sapphire engagement rings — all ethically lab grown and sustainably sourced.

Carbon Neutral & One Tree Planted Partner We offset the carbon footprint of every order and plant a tree for each ring sold, supporting global reforestation.

Custom Design Specialists Whether you're interested in solitaire oval engagement rings or striking emerald cut engagement rings , our team specializes in creating custom pieces that reflect your personal style.

Looking for a specific style? Choose from our collections below:

An emerald cut diamond features a rectangular shape with truncated corners and step-cut facets. This design creates a unique ‘hall of mirrors’ effect, offering a sophisticated and understated sparkle. The elongated silhouette of this classic style enhances the stone's elegance and depth, making it a timeless choice for an engagement ring.​

Emerald cut diamond rings are celebrated for their elegance and vintage-inspired charm. Their clean lines and refined sparkle appeal to those who appreciate minimalist design. The elongated rectangular shape flatters the finger and suits a variety of settings, from classic solitaires to intricate halo designs.​

While emeralds are a different gemstone entirely and less durable than diamonds, lab-grown emerald cut diamonds possess the same chemical composition, crystal structure, and physical properties as mined diamonds, making them virtually indistinguishable. They are also more responsible, sustainable, and often more affordable, making them an excellent choice for engagement rings and other jewelry.

The price of rings with emerald cut centre stones at Cullen varies based on factors such as the chosen gemstone, carat weight, and setting design. We offer a range of designs to suit different budgets, and our team can help you find or create a ring that meets your preferences and price point.​

When selecting an emerald cut lab-grown diamond for your engagement ring, consider its color (such as a colorless white diamond), clarity, carat weight, and cut. Cullen offers a range of high-quality lab-grown emerald cut diamonds with varying hues, inclusions, and carat sizes to suit different preferences and budgets.

Cullen offers a variety of precious metal options for your emerald cut lab-grown diamond engagement ring, including yellow gold, rose gold, and platinum. Our team can help you choose the best metal to complement your emerald cut center stone and desired design.

Emerald cut lab-grown diamonds, just like any other diamond shape, have a rating of 10 on the Mohs scale of mineral hardness, making them extremely durable for daily wear. They are highly resistant to scratches and chips, making them an ideal choice for engagement rings and other fine jewelry.

The lead time for a custom emerald cut engagement ring varies depending on the complexity of the design and the availability of materials. Once your design is finalized, our team will provide you with an estimated completion date.

Yes, we invite you to visit our showroom to view our complete range of emerald cut engagement rings and other fine jewelry. You can also browse our online ring builder page to explore our collection and start designing your perfect diamond ring.

Yes, we offer complimentary resizing for all our engagement rings. If your ring doesn't fit perfectly, simply contact us, and we'll adjust it to ensure a comfortable fit.​

All gold and platinum jewelry from Cullen comes with a lifetime manufacturing warranty. This warranty covers any defects in materials or workmanship, giving you peace of mind that your ring is crafted to the highest standards.