Hand wearing solitaire lab-grown diamond ring

M O D E R N • E T H I C A L

Certified Lab Diamond Engagement Rings

Crafted in the USA with eco-lab diamonds

Build Your Own Ring Shop Ready-to-Ship-Rings

Certified Eco-Lab Diamonds

Craft Locally in U.S

Spend $4,000 and get FREE Diamond Studs

Free Shipping Any Order

Certified Eco-Lab Diamonds

Craft Locally in U.S

Spend $4,000 and get FREE Diamond Studs

Free Shipping Any Order

Certified Eco-Lab Diamonds

Craft Locally in U.S

Spend $4,000 and get FREE Diamond Studs

Free Shipping Any Order

Certified Eco-Lab Diamonds

Craft Locally in U.S

Spend $4,000 and get FREE Diamond Studs

Free Shipping Any Order

Certified Eco-Lab Diamonds

Craft Locally in U.S

Spend $4,000 and get FREE Diamond Studs

Free Shipping Any Order

Certified Eco-Lab Diamonds

Craft Locally in U.S

Spend $4,000 and get FREE Diamond Studs

Free Shipping Any Order

Shop by Popular Setting Styles

Halo

Solitaire

Three-Stone

Shop by Diamond Shapes

Cushion

Cushion
Heart

Heart
Pear

Pear
Emerald

Emerald
Round

Round
Princess

Princess
Oval

Oval
Marquise

Marquise
Asscher

Asscher
Radiant

Radiant

Shine With Total Transparency, Fair-priced
rings, locally set
with planet-friendly lab diamonds
for the modern bride.

Yes — Both Are Real Diamonds

See how lab-grown and mined diamonds stack up on purity, ethics, and price

Lumeo Lab 💎
Mined 💎
Is It a Real Diamond? 💎
100 % real—identical in chemistry, sparkle, and durability.
Yes – formed naturally in the earth.
Chemical Makeup 🧪
Pure carbon (C)
Pure carbon (C)
Hardness 🔨
10 on the Mohs scale
10 on the Mohs scale
Origin 🏭
Created in a clean, modern lab—zero mining or conflict.
Through mining – often disruptive to land and ecosystems.
Cost 💲
Typically 30–70 % less for comparable quality.
Higher due to mining, labor, and supply limitations.
Environmental Impact 🍃
Minimal land use, low water, smaller carbon footprint.
High land disturbance, water use, and CO₂ emissions.
Appearance ✨
Identical – same sparkle, brilliance, and fire
Identical – same sparkle, brilliance, and fire
Certification 📜
GIA/AGS/IGI
GIA/AGS/IGI

Love notes from delighted couples

Jacob & Mia – Chicago, IL

Lumeo walked us through every step, from the setting to the stone. Total transparency, zero stress—just a gorgeous piece we’re proud to show off.

Olivia R. – Austin, TX

The ring is even brighter in person, and knowing it’s a conflict-free lab diamond makes me smile every time I look at it.

Sarah L. – San Francisco, CA


I compared so many retailers, but nothing matched the sparkle-to-price ratio here. Friends assume we spent twice as much!

Danielle K. – New York, NY

Shipping updates were spot-on, and the unboxing felt like opening something truly special. The engraving is flawless.

Emily & Chris – Denver, CO

Sustainable, stunning, and delivered ahead of schedule. Our engagement photos practically glow thanks to this ring.

Eco Bride Mag

Modern Love Review

Gem Journal

Bridal Future

Sustainable Style Weekly

Eco Bride Mag

Modern Love Review

Gem Journal

Bridal Future

Sustainable Style Weekly

Eco Bride Mag

Modern Love Review

Gem Journal

Bridal Future

Sustainable Style Weekly

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