Ethically Sourced Lab-Grown Diamonds
Ethical Beauty,
Exceptional Value
Discover our collection of stunning lab-grown diamond engagement rings and fine jewelry. Same brilliance, better choice.
Valentine's Day Gift Guide
Your guide to Valentine's Day gifting — from timeless lab-grown diamond favorites to personalized pieces that make every moment shine.
Made for your story
At KoaLab, we create elegant engagement rings and stunning fine jewelry with high-quality lab-grown diamonds. Beautiful statements made to last.

The Signature Collection
Introducing KoaLab's Signature Collection—vivid lab-grown diamonds in modern, sculptural settings. Bold, brilliant, and unforgettable.
Exceptional Value Edit
Discover a limited-time collection from KoaLab, featuring timeless designs, signature craftsmanship, and unmatched value to make your moment shine.


Visit Our Boutique
Experience fine jewelry shopping at its finest in our flagship Portland, Oregon boutique.
Why Make It KoaLab
KoaLab, the first in lab-grown diamonds, is B Corp certified and plants a tree with every order—where innovation meets purpose.

Trending Styles
Explore the finest
lab-grown diamonds
Lab-grown diamonds offer the same beauty and brilliance as mined diamonds without the environmental cost. At KoaLab, we create engagement rings using premium lab-created diamonds, designed with intention and built to last. Each piece reflects a modern approach to fine jewelry: elegant, meaningful, and made to celebrate life's most important moments.
Absolutely. At KoaLab, you can design a custom engagement ring that reflects your personal style and story. Start by choosing your favorite setting, metal, and lab-grown diamond or gemstone. From there, our team will help bring your vision to life making the process effortless, inspiring, and entirely your own. Whether you're designing solo or with a partner, you'll end up with something truly one-of-a-kind.
Yes, lab-grown diamonds are 100% real. KoaLab's lab-created diamonds are made of pure carbon, just like mined diamonds. They have the same optical, physical, and chemical properties, offering the same brilliance, hardness, and sparkle. Think of it like ice from a glacier versus ice from your freezer - different origins, same result. With lab-grown diamonds, you get all the beauty of a traditional diamond, crafted through modern innovation.
Yes. Every KoaLab piece comes with a Lifetime Guarantee that reflects our commitment to quality and craftsmanship. We guarantee that all jewelry is free from manufacturing defects in materials and workmanship at the time of delivery. And because our lab-grown diamonds are real diamonds, their brilliance, clarity, and structure will never fade or cloud over time. It's our promise that your ring will shine as beautifully in the years ahead as it does the day it arrives.
Lab Grown Diamonds
Chemically, physically, and optically identical to mined diamonds.
Ethically Sourced
Conflict-free diamonds with complete transparency in our supply chain.
Lifetime Warranty
Every piece comes with our comprehensive lifetime warranty.
Free Shipping
Complimentary insured shipping on all orders over $500.
Create Your Perfect Ring
Design your dream engagement ring in just a few steps. Start with your favorite setting, then choose the perfect lab-grown diamond. Our experts are here to help you every step of the way.
Why Choose Lab Grown Diamonds?
100% Conflict-Free
Our diamonds are created in controlled laboratory environments, ensuring zero conflict or unethical mining practices.
Identical Quality
Lab grown diamonds have the same physical, chemical, and optical properties as mined diamonds - certified by GIA and IGI.
Better Value
Get a larger, higher-quality diamond for your budget. Lab grown diamonds cost 40-60% less than mined diamonds.
What Our Customers Say
Join thousands of happy couples who chose KoaLab for their special moments.
"I couldn't be happier with my engagement ring. The diamond is stunning and knowing it's ethically sourced makes it even more special."
Sarah M.
California
"The quality exceeded my expectations. The ring arrived beautifully packaged and my fiancée was over the moon!"
Michael T.
New York
"Amazing customer service and beautiful jewelry. I've already recommended KoaLab to all my friends."
Emily R.
Texas
Ready to Find Your Perfect Diamond?
Our diamond experts are here to help you find the perfect lab-grown diamond for your budget and style. Start your journey today.

































