Heritage Round Lab Grown Diamond Three-Stone Engagement Ring

IGI Report IncludedMade to OrderInsured Delivery

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$1,035.00

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Independently graded by IGI IGI Report Included Selected 0.50 ct+ lab-grown center or primary diamond · IGI grading report · Signora Jewelry Certificate included. 1 ct lab-grown diamond · IGI report · Signora Certificate included.

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Forever, A & J

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Complimentary · hand-engraved to order · adds about 3–4 days.

Estimated dispatch: 7 business days Duties & taxes prepaid

Ring size guide

Lay a ring you own flat on the circle and slide until it sits just inside it — or set its inner diameter directly.

Measure the inside of a ring that already fits — inner edge to edge — with a ruler in mm, then set it below. No ring handy? Try Measure your finger.

14 mm 24 mm 17.3 mm

Inner diameter mm

US size

UK size

EU size

Circumference

54.3 mm

Between sizes? Always choose the larger size. Fingers are slightly bigger in the evening — measure then for the best fit.

Method 1 — Use an existing ring

Find a ring that fits the intended finger comfortably.
Place it flat and measure the inner diameter (inside edge to inside edge) in mm.
Enter that measurement in the Measure a ring tab.

Method 2 — Wrap and measure

Wrap a thin strip of paper around the base of your finger.
Mark where it overlaps — measure that length in mm (your circumference).
Divide by 3.1416 (π) to get your diameter, then use the Measure a ring tab.

Tip: Middle finger sizes typically run half a size larger than the ring finger. If between sizes, go up. Measure in the evening — fingers are slightly larger then.

7US size

US	UK	EU	Diameter	Circumference

Highlighted row = your converted size. Most common women's sizes are US 6–7. All measurements in mm.

Selected: —

The Signora Promise

Hand-finished in SuratMade to order

Reports where statedExact scope shown

Insured deliverySigned & tracked

Secure checkoutShopify checkout

Standard-design returns30-day eligibility

Final inspectionChecked before dispatch

About This Ring

Round Brilliant · Three Stone

Center

Round Brilliant

Carat

1 ct

Customizable

Metal

Customizable

Setting

Three Stone

An independent IGI grading report is included when the selected individual lab-grown center or primary diamond is 0.50 ct or larger.

Detail	Reference Design	Customizable
Center Diamond	Round Old European Cut Lab Grown Diamond · 6.40–6.50 mm · Approx. 1.00 ct (Reference)	1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct, 4.5 ct
Accent Diamonds	2 Round Brilliant + 4 Marquise + 8 Round Brilliant Lab Grown Diamonds · Approx. 0.28 ct Total	Scaled proportionally with the selected center diamond
Total Diamond Weight	Approx. 1.28 ct (Reference)	Varies with selected center diamond
Stone Type	Lab Grown Diamond	—
Setting	Six-Prong Cathedral Basket with Nature-Inspired Leaf Cluster Three-Stone Setting	—
Finish	High Polish	—
Occasion	Engagement · Anniversary · Bridal	—

At a glance

A round lab grown diamond engagement ring from Signora Jewels.

The reference design features an approximately 1.00 ct round old European cut lab grown diamond framed by nature-inspired side clusters containing round and marquise lab grown diamonds totaling approximately 0.28 ct. The sculpted botanical shoulders create a graceful three-stone composition with a reference total diamond weight of approximately 1.28 ct.

Made to order in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum.

Select your preferred center diamond size and precious metal using the options on this page.

The round old European cut center diamond is secured within a six-prong cathedral basket that allows generous light through the open gallery while providing excellent protection and stability. The elevated setting enhances brilliance from every viewing angle.

Marquise diamonds form delicate leaf motifs while round brilliant diamonds complete the floral side clusters, creating a balanced botanical silhouette that naturally guides the eye toward the center stone. The polished shoulders maintain a refined profile while adding vintage-inspired character. Every ring is handcrafted to order by Signora Jewels.

Design Highlights

Customizable round old European cut lab grown diamond from 1 ct to 4.5 ct
Nature-inspired three-stone design
Leaf-inspired marquise diamond clusters
Round brilliant accent diamonds
Six-prong cathedral basket
High polish finish

Browse our Round Engagement Rings, explore the Engagement Ring Guide, or compare precious metals using our Metal Guide.

Diamond Details

Specification	Details
Reference Center Diamond	Round Old European Cut Lab Grown Diamond · 6.40–6.50 mm · Approx. 1.00 ct
Side Round Diamonds	2 Stones · Approx. 0.16 ct Total
Marquise Accent Diamonds	4 Stones · Approx. 0.08 ct Total
Additional Round Accent Diamonds	8 Stones · Approx. 0.04 ct Total
Total Stones	15
Reference Total Diamond Weight	Approx. 1.28 ct
Available Center Sizes	1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct and 4.5 ct

The measurements shown represent the photographed reference model. Final proportions vary according to the selected center diamond.

About Lab Grown Diamonds

The round old European cut offers distinctive vintage-inspired faceting with exceptional brilliance. Marquise leaf diamonds and round brilliant accents create a graceful botanical composition that complements the center stone while preserving timeless elegance.

Metal, Care & Fit

Available in Silver, 9K, 14K and 18K Yellow, White and Rose Gold, plus Platinum. Clean beneath the cathedral basket and around the leaf-inspired clusters with warm water, mild soap and a soft brush to maintain the brilliance of every lab grown diamond.

FAQ

What gives this ring its botanical appearance?
Marquise diamonds are arranged as sculpted leaves, while round brilliant diamonds complete the floral side clusters for a refined nature-inspired look.

Can I customize the center diamond?
Yes. This design is available with center diamond sizes from 1 ct through 4.5 ct.

Why does the ring use a six-prong setting?
The six-prong cathedral basket offers additional security while allowing light to reach the center diamond through the open gallery.

Is this ring suitable for everyday wear?
Yes. The secure six-prong setting and balanced shoulder design provide lasting comfort and durability for daily wear.

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