Lab Grown Round Cut Engagement Rings

Start with a classic round style, customize, then choose your lab diamond.

Marquise Cut 2.39ct Pave Prong Two Tone Diamond Ring

Regular price
$3,223
Regular price
Sale price
$3,223 USD
15% OFF

Oval Cut 2.01ct Low Profile Pave Diamond Ring

Regular price
$3,040
Regular price
Sale price
$3,040 USD
15% OFF

Emerald Cut 2.04ct Mini Cathedral White Gold Ring

Regular price
$2,065
Regular price
Sale price
$2,065 USD
15% OFF

Petals Cluster Engagement Ring

Regular price
$2,490+
Regular price
Sale price
$2,490 USD

Petals Cluster Engagement Ring

Regular price
$2,490+
Regular price
Sale price
$2,490 USD

Petals Cluster Engagement Ring

Regular price
$2,490+
Regular price
Sale price
$2,490 USD

Petals Cluster Engagement Ring

Regular price
$2,240+
Regular price
Sale price
$2,240 USD

Petals Cluster Engagement Ring

Regular price
$2,240+
Regular price
Sale price
$2,240 USD

Marquise Cut 1.90ct Fancy Pink Diamond East West Bezel Ring

Regular price
$3,496
Regular price
Sale price
$3,496 USD
15% OFF

Emerald Cut 5.42ct Low Basket Hidden Halo Pave Ring

Regular price
$6,190
Regular price
Sale price
$6,190 USD
15% OFF

Round 3.43ct Three Stone Diamond Ring

Regular price
$5,206
Regular price
Sale price
$5,206 USD
15% OFF

Oval Cut 2.23ct Pink Diamond Hidden Halo Ring

Regular price
$3,281
Regular price
Sale price
$3,281 USD
15% OFF

Princess Cut 2.00ct Diamond Pave Twist Ring

Regular price
$3,003
Regular price
Sale price
$3,003 USD
15% OFF

Radiant Cut 4.32ct Diamond Low Basket Pave Ring

Regular price
$3,289
Regular price
Sale price
$3,289 USD
15% OFF

Round Cut 1.30ct Cathedral Bezel Diamond Ring

Regular price
$1,769
Regular price
Sale price
$1,769 USD
15% OFF

Wide Bezel Diamond Ring

Regular price
$1,890+
Regular price
Sale price
$1,890 USD

Curated Round Lab Diamonds

Plum's lab grown diamond selection only includes the best cut grades, making each round diamond engagement ring a stunner.


Curated Round Lab Diamonds

Plum's lab grown diamond selection only includes the best cut grades, making each round diamond engagement ring a stunner.

Lab grown round cut engagement rings

Lab Grown Round Cut Diamond Engagement Rings: Would you consider yourself a classic sort of person who appreciates the finer things in life? Then a round lab-grown diamond engagement ring could be your match made in diamond heaven.

At Plum Diamonds, we know round-cut engagement rings make a timeless statement you'll admire every day for decades to come. No manicure needed (but maybe a little manicure helps). Our stunning collection of lab-grown round-cut engagement rings has been thoughtfully designed around diamond-centric styles that never go out of fashion. Intuitive custom design is the name of the diamond game. We know every person is unique and deserves a custom ring to seal the deal, so every lab grown round diamond engagement ring is made to order in our own facility that has been certified sustainable. 

Do you have ethical concerns about a round-cut engagement ring? No need to worry. At Plum Diamonds, we only use ethically sourced, round lab grown diamonds to grace your finger forever. Our round lab grown diamonds give you more bang for your buck while still matching the beauty of a mined diamond.

Diamonds were first cut into the classic, round shape in the 17th century, but it wasn't till 100 years ago that they started to gain popularity for their well-balanced look. Most jewelers agree that a round brilliant-cut diamond uses its perfect symmetry to provide maximum glow and sparkle. If you were asked to picture a diamond engagement ring, a round brilliant cut solitaire ring is likely the first thing that would come to mind. There's a reason round-cut engagement rings are so classic.

We want our solitaire round-cut engagement rings, round halo engagement rings, and round three stones to grace fingers with confidence. This is why we provide a lifetime warranty with every ring purchase. So, are you ready to make memories that will last a lifetime? Choose a classic, round-cut engagement ring —  round-cut engagement rings can attract eyeballs and will put your new heirloom piece center stage. In other words, be prepared for a little diamond ring attention and a lot of confidence in your decision to choose a lab grown round diamond engagement ring.