3 Carat Engagement Rings

Three-carat engagement-ring options give proportion and setting an especially visible role. Compare the actual centre material, measurements and mounting, with comfort and wedding-band fit considered from the start.

Isabella solitaire oval lab diamond cathedral setting set 18k yellow gold engagement ring

ISABELLA
Oval Lab Diamond 18k Yellow Gold Solitaire

From 401,200.00 RSD

Eden shoulder set solitaire oval lab diamond shoulder twist set 18k yellow gold engagement ring

EDEN
Oval Lab Diamond 18k Yellow Gold Vine Solitaire

From 443,400.00 RSD

Blossom oval and pear lab diamond trilogy 18k white gold platinum engagement ring

BLOSSOM
Oval Lab Diamond & Pear Lab Diamond 950 Platinum Trilogy Ring

From 478,700.00 RSD

Hidden Halo

PARIS
Oval Lab Diamond 18k Yellow Gold Hidden Halo

From 394,100.00 RSD

Hidden Halo

PARIS
Oval Lab Diamond Platinum Hidden Halo

From 394,100.00 RSD

Viola oval lab diamond shoulder set 18k white gold platinum engagement ring

VIOLA
Oval Lab Diamond Platinum Shoulder Set

From 443,400.00 RSD

Grace solitaire round lab diamond 18k yellow gold engagement ring

GRACE
Round Lab Diamond 18k Yellow Gold Solitaire Ring

From 348,300.00 RSD

MARGOT
Elongated Cushion Lab Diamond 18k Yellow Gold Bezel Solitaire

From 415,300.00 RSD

Margot oval lab diamond 18k yellow gold bezel set engagement ring

MARGOT
Oval Lab Diamond 18k Yellow Gold Bezel Solitaire

From 415,300.00 RSD

Hidden Halo

PARIS
Marquise Lab Diamond 18K Yellow Gold Micro Pavé Hidden Halo

From 350,700.00 RSD

REGENT
Radiant Lab Diamond Platinum Solitaire

From 415,000.00 RSD

FLORENCE
Radiant Lab Diamond 18k Yellow Gold Solitaire

From 337,500.00 RSD

Lulu petite solitaire marquise lab diamond set 18k yellow gold engagement ring

LULU
Marquise Lab Diamond 18k Yellow Gold Petite Solitaire

From 329,600.00 RSD

SLOANE
Pear Lab Diamond 950 Platinum Petite Solitaire

From 381,100.00 RSD

Louella oval and round lab diamond trilogy 18k yellow gold engagement ring

LOUELLA
Oval Lab Diamond 18k Yellow Gold Trilogy Ring

From 436,400.00 RSD

Hidden Halo

PARIS
Elongated Cushion Lab Diamond 18k Yellow Gold Hidden Halo

From 394,100.00 RSD

Hidden Halo

PARIS
Emerald Lab Diamond & Diamond Platinum Hidden Halo Solitaire

From 330,400.00 RSD

FLORENCE
Emerald Lab Diamond 18k Yellow Gold Solitaire

From 337,500.00 RSD

Allure Oval Lab Diamond shoulder set yellow gold scatter engagement ring

ALLURE
Oval Lab Diamond 18k Yellow Gold Scatter Ring

From 478,700.00 RSD

Allure Oval Lab Diamond shoulder set white gold platinum scatter engagement ring

ALLURE
Oval Lab Diamond Platinum Scatter Ring

From 478,700.00 RSD

Lulu petite solitaire oval lab diamond set 18k yellow gold engagement ring

LULU
Oval Lab Diamond 18k Yellow Gold Petite Solitaire

From 373,000.00 RSD

Lillie solitaire round lab diamond knife edge setting set 18k white gold platinum engagement ring

LILLIE
Round Lab Diamond 950 Platinum 6 Prong Knife Edge Solitaire Ring

From 348,300.00 RSD

VIOLA
Radiant Green Lab Diamond 18k White Gold Shoulder Set

395,700.00 RSD

VIOLA
Radiant Green Lab Diamond 18k Yellow Gold Shoulder Set

395,700.00 RSD

Choosing 3 carat engagement rings

Read weight and material together

Check whether the selected figure describes centre weight, total stone weight or a moissanite diamond-equivalent size. Different materials have different densities, so matching weight does not establish matching dimensions. Read the actual product specification and use millimetre measurements for visual comparison.

Assess the 3-carat setting

A more substantial centre calls for a considered mounting. Examine the claws, basket, band width and how the ring sits above the finger. Compare its projection in side views and check whether your preferred wedding band clears the setting. Weight alone cannot describe the complete ring’s scale.

Use current prices and the actual report

Compare the current price for the chosen stone, metal and mounting. Where a diamond report is supplied, check its issuer, date and service. GIA’s D-to-Z lab diamond service introduced Premium or Standard assessments in October 2025; earlier reports and IGI reports may use different terminology.

A question worth asking

Will every 3-carat option look the same size?

No. Material, outline, depth and setting affect its visible scale. Compare the individual length and width and read centre, total and equivalent-size wording carefully.

2026 Award Nominations

Award Winning Jeweller

We’re proud to be recognised consistently by the UK jewellery industry’s leading awards programmes. In 2026, Lily Arkwright has been shortlisted for Branded Boutique of the Year at the Professional Jeweller Awards and Bridal Jewellery Retailer of the Year at the UK Jewellery Awards, reflecting our continued commitment to exceptional customer service, product innovation, and ethical craftsmanship.

These latest nominations build on previous industry recognition, including being shortlisted for Bridal Jewellery Retailer of the Year at the 2025 UK Jewellery Awards and Independent Retailer of the Year at the Professional Jeweller Awards 2025. We were also finalists for Retail Team of the Year at both the Retail Jeweller Awards and Professional Jeweller Awards in 2024, recognising the passion, expertise, and dedication of our team.

We’re honoured to be recognised for helping thousands of couples find the perfect engagement rings and wedding rings, with a strong focus on choice, transparency, and personalisation. As an award-winning jeweller, we remain committed to delivering exceptional service, exceptional craftsmanship, and responsibly sourced lab-grown diamonds, moissanite, and natural diamonds, ensuring every customer can find a ring that perfectly reflects their love story.