Diamond ring with a central oval-cut diamond and two smaller diamonds on a white background
Silver ring with two diamonds on a white background
Silver ring with a central diamond and two smaller diamonds on a white background

Oval Cut Lab Grown Diamond Engagement Ring in Platinum - Three-Stone Style

$1,500.00
$1,500.00
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Spend $2,500+ and get a Free Band with your order

*The free band will be automatically added once your cart reaches $2,500.

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Free Shipping & Holiday Returns
Free Lifetime Warranty
Lifetime Diamond Upgrade
Free 1-Year Resizing

We've Got You Covered

Free Shipping & Holiday Returns

We cover free shipping, returns, and extended holiday returns so you can shop confidently.

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Free Lifetime Warranty

We stand behind our craftsmanship with a full lifetime warranty on all pieces.

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Lifetime Diamond Upgrade

Get full credit toward a new diamond anytime you want to upgrade.

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Free 1-Year Resizing

We offer complimentary resizing within the first year for the perfect fit.

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Refined and enduring, the Oval Cut Lab-Grown Diamond Engagement Ring in Platinum by Assel & Co combines sleek modern elegance with meaningful sustainability. The oval diamond’s elongated form delivers brilliance and grace, while the platinum setting offers unmatched durability and a cool-toned, sophisticated finish.

Each ring is handcrafted to order, made to showcase the brilliance of your selected diamond shape—whether oval, round, emerald, cushion, or pear. Our lab-grown diamonds offer the same beauty and performance as mined diamonds, but with a lighter environmental footprint and greater ethical integrity.

Key Features:

  • Ethically sourced oval cut lab-grown diamond

  • Custom-crafted in premium platinum

  • Available in all popular diamond shapes

  • Perfect for engagements, anniversaries, or lifetime gifts

  • Designed by Assel & Co timeless luxury, responsibly made

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Order Details

  • Free Lifetime Warranty
  • 1 Year Free Ring Resizing
  • Free Express Delivery

This is an estimate based on production and shipping. Tracking will be provided once your order ships.

Assel & Co Order Includes
Assel & Co.

Engagement Rings Styles

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