A woman with short curly hair smiles with her hands gently clasped near her face, wearing a sleeveless top, diamond earrings, and a ring. The word PROMISE is displayed at the bottom of the image.

Lab Grown Diamonds: The Future of Brilliance

When you purchase a lab grown diamond from Promise by Effy, you are getting the highest quality stones, carefully handcrafted by master artisans and priced perfectly. We leverage 45 years of expertise and industry connections to bring you the brightest lab diamonds, selected from the best possible sources and backed by a limited lifetime warranty.

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A smiling woman with short curly hair clasps her hands near her face, showing a ring and stud earrings. The word PROMISE by EFFY appears on the left. The background is softly blurred in light tones.

Lab Grown Diamonds:
The Future of Brilliance

When you purchase a lab grown diamond from Promise by Effy, you are getting the highest quality stones, carefully handcrafted by master artisans and priced perfectly. We leverage 45 years of expertise and industry connections to bring you the brightest lab diamonds, selected from the best possible sources and backed by a limited lifetime warranty.

SHOP AT PROMISE BY EFFY
A close-up of a gold engagement ring with a solitaire diamond in a prong setting, displayed against a light, minimal background.

Design the Ring of Your Dreams

With over 26,000 ways to customize, Promise by Effy's ring
builder sets a new standard for personalization.

Start Creating Now
Close-up side view of a gold engagement ring featuring a large round diamond held by four prongs, with three small accent diamonds set beneath the main stone.

Design the Ring of Your Dreams

With over 26,000 ways to customize, Promise by Effy's ring builder sets a new standard for personalization.

Start Creating Now
A smiling couple looks at each other lovingly; the woman wears a diamond necklace, earrings, and ring, and holds the man’s arm. The man wears a light blue suit and white shirt. Both appear joyful and elegant. A pear-shaped diamond engagement ring with a pavé band is displayed in an open, light green velvet ring box with PROMISE BY EFY embossed inside the lid.

Lab Grown Diamond Engagement Rings

You’ve found your perfect person, now find the perfect ring. Introducing our new collection of lab grown engagement rings, featuring 31 scintillating new designs for every style and budget. Masterfully crafted, rooted in innovation, rich in love.

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A woman with manicured nails holds a gold chain bracelet in one hand and wears gold rings and a bracelet on the other hand, against a soft, neutral background. Seven gold rings with various designs and diamond settings are arranged neatly on a light beige surface with soft shadows.

Lab Grown Diamond Rings

We've put together a beautiful edit of rings to mark your most important moments, big or small, that are destined to become the ultimate modern heirloom.

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A woman with short, curly hair wears a heart-shaped stud earring and two diamond rings on her fingers, with her hand gently resting on her neck against a soft, light background. Close-up of a person’s ear wearing a single, round, clear stud earring with a silver setting. The background is softly blurred.

Lab Grown Diamond Earrings

If you’re searching for a bold statement earring or want to create a delicate and refined earscape, our curated collection of handcrafted earrings offers something for every look and every occasion.

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A woman wearing gold jewelry—including bracelets, rings, and a necklace—raises her hand near her face. She is dressed in a light green sleeveless top and stands outdoors, with a blurred blue-gray background. A close-up of a person’s arm wearing two delicate, thin bracelets—one silver and one gold—against a green, ribbed fabric background.

Lab Grown Diamond Bracelets

It’s all in the wrist. Whether you like your look sleek and uncomplicated, or prefer to have all eyes on your significant statement bracelet, we have just the piece you’ve been searching for.

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A woman wearing a strapless white top showcases a sparkling diamond necklace with floral-shaped stones, resting elegantly on her collarbone. Her arms are crossed gently across her chest. Four gold diamond tennis necklaces of varying lengths are displayed against a light beige marble background with a subtle crack running vertically.

Lab Grown Diamond Necklaces

From a simple diamond pendant you’ll reach for every day to bold diamond pavé link chains, we have everything you need to master the art of layering.

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