Platinum Cathedral Engagement Rings

Celebrate your love, and honor your values with a beautiful platinum cathedral engagement ring.

Matching Band for Cathedral Rings

Regular price
$1,440
Regular price
Sale price
$1,440 USD

Oval Sleek Cathedral Ring

Regular price
$1,490+
Regular price
Sale price
$1,490 USD

Sleek Cathedral Engagement Ring

Regular price
$1,490+
Regular price
Sale price
$1,490 USD

Emerald Cut Pave Cathedral Ring

Regular price
$1,840+
Regular price
Sale price
$1,840 USD

Radiant Cut Double Prong Cathedral

Regular price
$1,640+
Regular price
Sale price
$1,640 USD

Marquise Cut Cathedral Ring

Regular price
$1,490+
Regular price
Sale price
$1,490 USD

6 Prong Cathedral Engagement Ring

Regular price
$1,390+
Regular price
Sale price
$1,390 USD

6 Prong Cathedral Channel Ring

Regular price
$1,940+
Regular price
Sale price
$1,940 USD

Emerald Cut Sleek Cathedral Ring

Regular price
$1,490+
Regular price
Sale price
$1,490 USD

Emerald Cut Cathedral Bezel Ring

Regular price
$1,490+
Regular price
Sale price
$1,490 USD

Cathedral Channel Set Ring

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

Oval Cathedral Ring

Regular price
$1,540+
Regular price
Sale price
$1,540 USD

Oval Cathedral Pave Ring

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

Vintage Peekaboo Ring

Regular price
$2,140+
Regular price
Sale price
$2,140 USD

Princess Cut Pave Cathedral Ring

Regular price
$1,840+
Regular price
Sale price
$1,840 USD

Oval Pave Cathedral Ring

Regular price
$1,840+
Regular price
Sale price
$1,840 USD

Platinum cathedral engagement rings

Platinum Cathedral Engagement Ring Collection: If you’re looking for an engagement ring with purpose-driven craftsmanship, you’re in the right place. At Plum Diamonds, the value of an engagement ring is based on more than the cut, color, and clarity. Its impact on the planet also adds to the value. Because you shouldn’t have to compromise on your beliefs to own a high-quality engagement ring. Our collection of platinum cathedral engagement rings combines beautiful designs with responsibly crafted lab grown diamonds and sustainably sourced platinum durable enough to last as long as your love. 


Whether you’re drawn to classic designs like our Oval Sleek Cathedral Ring or prefer something more opulent, like the Oval Three Stone Trellis Ring, you can enjoy both beauty and eco-consciousness in this collection. Each lab grown diamond is created with significantly less environmental impact and fewer ethical concerns, all without sacrificing the quality you deserve in an heirloom.


There’s another perfect partner you can find at Plum Diamonds. Once you choose the perfect platinum cathedral engagement ring, you can explore our collection of wedding rings to complete your set. Similar to the variety in designs of our platinum cathedral engagement rings, you’ll find a range of wedding band styles that add the finishing touch you desire.