Platinum Lab Grown Engagement Rings

Radiant Cut Tulip Engagement Ring

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

Pear Cut Tulip Engagement Ring

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

Oval Tulip Engagement Ring

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

Marquise Cut Tulip Engagement Ring

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

Emerald Cut Tulip Engagement Ring

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

Cushion Cut Tulip Engagement Ring

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

Oval Cut Pave Twist Ring

Regular price
$2,350+
Regular price
Sale price
$2,350 USD

Marquise Cut Pave Twist Ring

Regular price
$2,350+
Regular price
Sale price
$2,350 USD

Round Pave Twist Ring

Regular price
$2,350+
Regular price
Sale price
$2,350 USD

Princess Cut Pave Twist Ring

Regular price
$2,350+
Regular price
Sale price
$2,350 USD

Wider Flat Band

Regular price
$1,590
Regular price
Sale price
$1,590 USD

Slim Flat Band

Regular price
$840
Regular price
Sale price
$840 USD

Wide Rounded Band

Regular price
$1,190
Regular price
Sale price
$1,190 USD

Bar Set Baguette Band

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

Oval Split Shank Solitaire

Regular price
$1,590+
Regular price
Sale price
$1,590 USD

Oval Split Shank Solitaire

Regular price
$1,240+
Regular price
Sale price
$1,240 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.