Platinum Cathedral Engagement Rings

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

Split Shank Cathedral Bezel Ring

Regular price
$1,990+
Regular price
Sale price
$1,990 USD

Radiant Cut Split Cathedral Bezel Ring

Regular price
$1,990+
Regular price
Sale price
$1,990 USD

Pear Shaped Split Cathedral Bezel Ring

Regular price
$1,990+
Regular price
Sale price
$1,990 USD

Old Mine Cut Split Cathedral Bezel Ring

Regular price
$1,990+
Regular price
Sale price
$1,990 USD

Marquise Cut Split Cathedral Bezel Ring

Regular price
$1,990+
Regular price
Sale price
$1,990 USD

Emerald Cut Split Cathedral Bezel Ring

Regular price
$1,990+
Regular price
Sale price
$1,990 USD

Marquise Cut Vintage Peekaboo Ring

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

Pear Cut Vintage Peekaboo Ring

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

Emerald Cut Vintage Peekaboo Ring

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

Cushion Cut Vintage Peekaboo Ring

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

Oval Cut Vintage Peekaboo Ring

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

Radiant Cut East-West Cathedral Bezel

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

Radiant Cut Wide Bezel Ring

Regular price
$1,990+
Regular price
Sale price
$1,990 USD

East-West Old Mine Cut Cathedral Ring

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

East-West Radiant Cut Cathedral Ring

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

East-West Emerald Cut Cathedral Ring

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