Diamond solitaire ring in a black presentation box

Round Cut Lab Grown Diamond Engagement Rings

Round Cut Lab Grown Diamond Engagement Rings

96 designs
  • Independent reportsExact scope shown by product
  • Made to order in SuratThree generations of expertise
  • International deliveryDuties & taxes prepaid
Round Halo Pink Lab Grown Diamond Engagement Ring in White Gold with Split Cathedral Pavé Shank Round Halo Pink Lab Grown Diamond Engagement Ring in White Gold with Split Cathedral Pavé Shank
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Round Lab Grown Diamond solitaire engagement ring in white gold with a six-prong cathedral basket diamond. Round Lab Grown Diamond solitaire engagement ring in white gold with a six-prong cathedral basket diamond.
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Portuguese cut round Lab Grown Diamond engagement ring in white gold with twisted cathedral shoulders and a four-prong open basket. Portuguese cut round Lab Grown Diamond engagement ring in white gold with twisted cathedral shoulders and a four-prong open basket.
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Portuguese cut round Lab Grown Diamond engagement ring in white gold with a six-prong lotus basket and pinched comfort-fit shank. Portuguese cut round Lab Grown Diamond engagement ring in white gold with a six-prong lotus basket and pinched comfort-fit shank.
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Round Lab Grown Diamond floral engagement ring in rose gold with a six-petal flower basket and leaf pavé shoulders. Round Lab Grown Diamond floral engagement ring in rose gold with a six-petal flower basket and leaf pavé shoulders.
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Old European cut Lab Grown Diamond vintage engagement ring in yellow gold with a six-prong lotus basket and engraved milgrain band. Old European cut Lab Grown Diamond vintage engagement ring in yellow gold with a six-prong lotus basket and engraved milgrain band.
Pear cut and round Lab Grown Diamond two-stone bypass engagement ring in white gold with four-prong open baskets. Pear cut and round Lab Grown Diamond two-stone bypass engagement ring in white gold with four-prong open baskets.
round open halo engagement ring in yellow gold
round open halo engagement ring in rose gold
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round multi-row diamond engagement ring in yellow gold
round multi-row diamond engagement ring in rose gold
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round scroll three-stone engagement ring in yellow gold
round scroll three-stone engagement ring in rose gold
round crossover diamond engagement ring in yellow gold
round crossover diamond engagement ring in rose gold
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round lab grown diamond scalloped halo ring in yellow gold
round lab grown diamond scalloped halo ring in rose gold
round lab grown diamond floral multi-row ring in yellow gold
round lab grown diamond floral multi-row ring in rose gold
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round diamond floral halo engagement ring in yellow gold
round diamond floral halo engagement ring in rose gold
round diamond floral side-stone ring in yellow gold
round diamond floral side-stone ring in rose gold
round diamond hidden halo engagement ring in yellow gold
round diamond hidden halo engagement ring in rose gold
round diamond pavé crossover ring in yellow gold
round diamond pavé crossover ring in rose gold
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round diamond crossover pavé ring in yellow gold
round diamond crossover pavé ring in rose gold
round diamond crossover engagement ring in yellow gold
round diamond crossover engagement ring in rose gold
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round diamond marquise five-stone ring in yellow gold
round diamond marquise five-stone ring in rose gold
The Collection

Round Cut Lab Grown Diamond Engagement Rings

The round brilliant is the most light-hungry cut ever engineered: 58 facets arranged to send almost every ray that enters the stone back to your eye. It is the shape that sparkles hardest, and the reason it has stayed the world's most-chosen diamond for a century.

This collection brings together our round brilliant lab grown diamonds across engagement rings, studs, pendants, tennis pieces and everyday designs — from a single solitaire to graduated pavé.

  • Lab-grown diamonds — chemically and optically identical to mined stones
  • IGI certified, supplied with the piece on delivery
  • 11 metal options: recycled silver, 9K/14K/18K yellow, white and rose gold, and platinum
  • Made to order, so most designs can be scaled to your preferred carat weight

Every piece is made to order in your choice of recycled silver, 9K, 14K or 18K gold, or platinum, and arrives IGI certified with its lab-grown diamond grading report.

The Signora promise

Made for you. Backed by us.

Thoughtful craftsmanship, clear proof and support that continues after delivery.

Made to Order

Every piece is crafted after you order, then hand-finished in our family workshop in Surat.

Independent Certification

Each approved individual lab-grown center or primary diamond of 0.50 ct or more includes an IGI grading report.

Import Duties

Signora prepays import duties and taxes for every destination available at checkout, so they are not charged again on delivery.

30-Day Returns

Eligible standard products have 30-day returns when unworn, unused and in their original condition.

Made to last

Care & Composition

Clear information about materials, finishing, fit and everyday care — before you choose your piece.

  • Solid precious metals
  • Hand-finished in Surat
  • Made to order
Solid materials

Every Signora piece is made in solid precious metal — never plated or filled. Available options can include 925 sterling silver, 9K, 14K or 18K yellow, white or rose gold, and Pt950 platinum. Stone and certification details are listed on each product page.

Hand finishing

Each order is finished by hand in our family workshop in Surat. White gold is palladium-based, nickel-free and rhodium-finished; yellow and rose gold are polished to their natural warmth; platinum develops a soft patina with wear.

Everyday care

Wipe your piece after wear and store it separately in its pouch or box. Remove jewelry before swimming, showering, exercise or contact with lotions and cleaning products. For deeper cleaning, use lukewarm water, mild soap and a very soft brush; ask a jeweler to check stone settings periodically.

Sizing & Fit

Ring sizes and bracelet, necklace or chain lengths vary by design, so confirm the options on the product page before checkout. Because every piece is made to order, contact Client Care before ordering if you need a custom size or are unsure about fit.