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Unique Round Diamond Trilogy Engagement Rings

Drawing together timeless design with modern artistry, our collection of unique round diamond trilogy engagement rings offers you an exciting selection of unique rings, allowing you to find a design that speaks to love you share with your partner. A trilogy engagement ring is a timeless symbol of the journey you and your partner have shared as the three gemstones of this ring style represent the past, present, and future. Best known for their brightness and brilliance, a round diamond is a time-honoured diamond shape for an engagement ring as its versatile circular shape suits all styles and metals. We’ve curated a selection of our most unique and non-traditional engagement rings to help you find something unexpected and alternative.

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Taylor & Hart Marula Round Engagement Ring 360 detail 01

Marula

Round center framed by round diamond clusters engagement ring set in platinum

from $1,960
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and teal sapphire sides

from $1,470
Taylor & Hart Marula Round Engagement Ring 360 detail 01

Marula

Round center framed by round diamond clusters engagement ring set in 18K yellow gold

from $1,715
Taylor & Hart Marula Round Engagement Ring 360 detail 01

Marula

Round center framed by round pink sapphire and diamond clusters engagement ring set in platinum

from $1,960
Taylor & Hart Marula Round Engagement Ring 360 detail 01

Marula

Round center framed by round pink sapphire and diamond clusters engagement ring set in 18K yellow gold

from $1,715
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and green sapphire sides

from $1,330
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and purple sapphire sides

from $1,470
Taylor & Hart Marula Round Engagement Ring 360 detail 01

Marula

Round center framed by round diamond clusters engagement ring set in 18K white gold

from $1,855
Taylor & Hart Marula Round Engagement Ring 360 detail 01

Marula

Round center framed by round pink sapphire and diamond clusters engagement ring set in 18K rose gold

from $1,715
Taylor & Hart Marula Round Engagement Ring 360 detail 01

Marula

Round center framed by round diamond clusters engagement ring set in 18K rose gold

from $1,715
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and teal sapphire sides

from $1,330
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and teal sapphire sides

from $1,365
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and peach sapphire sides

from $1,330
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and peach sapphire sides

from $1,470
Taylor & Hart Marula Round Engagement Ring 360 detail 01

Marula

Round center framed by round blue sapphire and diamond clusters engagement ring set in platinum

from $1,960
Taylor & Hart Lantana Round Engagement Ring 360 detail 01

Lantana

Round engagement ring framed by marquise diamond clusters engagement ring set in platinum

from $1,680
Taylor & Hart Marula Round Engagement Ring 360 detail 01

Marula

Round center framed by round blue sapphire and diamond clusters engagement ring set in 18K yellow gold

from $1,715
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and teal sapphire sides

from $1,330
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and purple sapphire sides

from $1,365
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and peach sapphire sides

from $1,365
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and purple sapphire sides

from $1,330
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and peach sapphire sides

from $1,330
Taylor & Hart Marula Round Engagement Ring 360 detail 01

Marula

Round center framed by round pink sapphire and diamond clusters engagement ring set in 18K white gold

from $1,855
Taylor & Hart Marula Round Engagement Ring 360 detail 01

Marula

Round center framed by round blue sapphire and diamond clusters engagement ring set in 18K white gold

from $1,855
Taylor & Hart Marula Round Engagement Ring 360 detail 01

Marula

Round center framed by round blue sapphire and diamond clusters engagement ring set in 18K rose gold

from $1,715
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and green sapphire sides

from $1,470
Taylor & Hart Lantana Round Engagement Ring 360 detail 01

Lantana

Round engagement ring framed by marquise diamond clusters engagement ring set in 18K yellow gold

from $1,505
Taylor & Hart Lantana Round Engagement Ring 360 detail 01

Lantana

Round engagement ring framed by marquise diamond clusters engagement ring set in 18K white gold

from $1,610
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and green sapphire sides

from $1,365
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and green sapphire sides

from $1,330
Taylor & Hart Faith Round Engagement Ring 360 detail 01

Faith

Trilogy engagement ring with round center diamond and purple sapphire sides

from $1,330
Taylor & Hart Lantana Round Engagement Ring 360 detail 01

Lantana

Round engagement ring framed by marquise diamond clusters engagement ring set in 18K rose gold

from $1,505

Unique Round Diamond Trilogy Engagement Rings

We want the process of finding a ring to be a creative act, one that gets to the heart of what makes your love unique. Our collection of engagement rings features a diverse range of styles, metals, and ring shapes, making it easy for you to feel confident that you’ve found ‘the one’.

Sometimes referred to as a trinity engagement ring or three stone engagement ring, a trilogy engagement rings feature three gemstones or diamonds, each one representing the past, present, and future. It’s their symbolic nature that makes hearts fall for a trilogy engagement. With three centre stones, a unique trilogy engagement ring has a bold presence, filled with all the light of your love.

Who could deny the wow-factor of a brilliant round diamond? Our most popular diamond type by far, round diamond engagement rings are versatile, classic, and can fill and entire room with shimmer light. When set in a unique trilogy engagement ring, round diamonds come alive as they’ve been mathematically developed to reflect the most light. If you want a round diamond trilogy engagement ring that stands out from the rest, consider adding some custom details such as an engraving or double prong setting to your design.

When you find the love of your life, you know there’s nothing else like it on earth. Unmatched and one of a kind, the bond you share is unique in ways known only to the two of you—so why not choose a unique trilogy engagement ring that feels the same? Our unique engagement ring designs celebrate the original and unexpected through diamond clusters, asymmetrical designs, and pavé styles like you’ve never seen before. Far from trendy, these handcrafted rings take timeless designs and turn them into something that’s uniquely yours.

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