Platinum Lab Grown Engagement Rings

Round

Emerald

Oval

Radiant

Cushion

Pear

Marquise

Shop by Style

Sort:

Cushion Cut Wide Cathedral

$1,590+
$1,590 USD

Asscher Cut Cathedral Ring

$1,340+
$1,340 USD

Asscher Cut Pave Cathedral Ring

$1,690+
$1,690 USD

Oval Pave Cathedral Ring

$1,690+
$1,690 USD

Emerald Cut Pave Cathedral Ring

$1,690+
$1,690 USD

Radiant Cut Vintage Peekaboo Ring

$1,890+
$1,890 USD

All Center Shapes

Accented Cathedral Ring

$2,540+
$2,540 USD

Asscher Cut Wide Trellis Ring

$1,540+
$1,540 USD

All Center Shapes

East-West Oval Cathedral Ring

$1,390+
$1,390 USD

Marquise Cut Cathedral Ring

$1,390+
$1,390 USD

Marquise Cut East-West Cathedral Bezel

$1,340+
$1,340 USD

Marquise Cut Cathedral Bezel Ring

$1,390+
$1,390 USD

Radiant Cut Cathedral Bezel Ring

$1,390+
$1,390 USD

Radiant Cut Bezel Ring

$1,390+
$1,390 USD

Pear Cut Cathedral Bezel Ring

$1,390+
$1,390 USD

Oval East-West Cathedral Bezel

$1,340+
$1,340 USD

The Only Metal that's Pure White

Platinum engagement rings are more pure than gold rings - which always start out yellow - so platinum does not need plating to shine bright white.


The Only Metal that's Pure White

Platinum engagement rings are more pure than gold rings - which always start out yellow - so platinum does not need plating to shine bright white.

Platinum lab grown engagement rings

If your love is rare and strong, it deserves a metal that is equally robust and cherished. Enter platinum. This malleable noble metal is extremely resistant to tarnishing and corrosion and makes for some truly jaw-dropping lab grown diamond engagement rings. Since it is the only pure white metal, platinum doesn’t require any plating! That’s right – your platinum lab grown diamond ring will stay never lose its luster or color, making it an ideal choice for a family heirloom.

At Plum Diamonds, we don’t take the rarity of platinum for granted. That’s why we work closely with our expert casters to produce the highest quality platinum pieces. Plus, being stronger than gold, your lab grown diamond rings, whether they be three stone, cathedral or solitaire, will always be safe with a platinum engagement ring setting. So go ahead, celebrate your love worry-free!

Every Plum platinum engagement ring is backed for life and responsibly made from the finest metal alloys and lab diamonds, costing far less than their mined counterparts – an ethical, eco-friendly way to go bigger, better, and brighter.