2.5 ctw Lab Diamonds set in Platinum Cushion Cathedral Pavé Diamond Engagement Ring (Main View)

Cushion Cut Lab Diamond Engagement Rings

Ada Diamonds is the leading luxury jeweler of lab diamonds. 
Design a one-of-a-kind engagement ring featuring 100% conflict-free, lab diamonds in the setting.

2.5 ct Diamonds set in Yellow Gold Cushion and Round Diamond Engagement Ring (Main View)

The World's Best Cushion Cut Lab Diamonds

Our curation experts search the world over to find the most unique and brilliant cushion cut lab diamonds for our clients. From elegant solitaires to unique, bespoke designs, each of our rings is crafted to order with an uncompromising commitment to quality. 

Our hand-selected inventory is comprised of cushion cuts of various cut styles and ratios: 

Platinum Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring High Quality 2.5 Carat Diamonds (Main View)


Exceptional Quality 3.5 ctw Diamonds set in Yellow Gold Cushion Cathedral Pavé Setting (Profile View)


Yellow Gold Cushion Petite Four Prong Solitaire Diamond Engagement Ring featuring 2.5 Carat Lab Diamonds (Main View)


Platinum Cushion Halo Pavé Diamond Engagement Ring featuring High Quality 3.5 ct Lab Diamonds (Main View)


Ada Diamonds is the Leading Luxury Purveyor of Lab Diamonds

Ada Diamonds specializes in large, sensational diamonds of superlative quality. Our diamonds are cut from the highest purity diamond crystals, have optimal cut and sparkle, and are always eye clean. Much like mined diamonds, lab diamonds are priced based on their quality characteristics. Use the tool below to understand our pricing:

Select Your Carat Weight

ColorlessNear Colorless
$4,950 to
$3,150 to
Not sold by Ada Diamonds

Pricing in USD. Subject to availability.

This chart shows a range of approximate prices across various size and quality levels and should serve as a rough guideline, not an exact calculator. Lab diamonds are unique SKU’s whose individual prices may be influenced by attributes beyond the 4 C’s. Prices are subject to change.
7.0 ctw Diamonds set in Platinum Cushion Eternity Band in Platinum 7ctw (Main View)

Why Choose Ada Diamonds?

We offer the most exceptional lab grown diamonds on earth set in one-of-a-kind settings made with superlative craftsmanship. 

Yellow Gold Custom Solitaire Diamond Engagement Ring featuring Hand Selected 2.5 ct Diamonds (Main View)

Ada vs the Competition

Algorithms can’t select beautiful diamonds, but our experts can. No other lab diamond jeweler can offer you the level of expertise and peace of mind that you’ll find at Ada. 

Cushion Stud Earrings featuring Lab Diamonds (Main View)

New to Lab Diamonds?

Our lab grown diamonds are optically and chemically superior to natural diamonds. Learn more about the future of fine jewelry.