Platinum Cathedral Engagement Rings

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

East-West Cushion Cut Cathedral Ring

Regular price
$1,740+
Regular price
Sale price
$1,740 USD

Princess Cut Cathedral Ring

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

Sleek Pave Cathedral Engagement Ring

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

Radiant Cut Sleek Pave Cathedral

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

Pear Cut Sleek Pave Cathedral

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

Marquise Cut Sleek Pave Cathedral

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

Cushion Cut Sleek Pave Cathedral

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

Wide Cathedral Engagement Ring

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

Radiant Cut Wide Cathedral

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

Princess Cut Wide Cathedral

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

Pear Cut Wide Cathedral

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

Marquise Cut Wide Cathedral

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

Emerald Cut Wide Cathedral

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

Cushion Cut Wide Cathedral

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

Asscher Cut Cathedral Ring

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

Asscher Cut 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.