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Heritage Octagon Lab Grown Diamond Vintage Engagement Ring
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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
Cut · Solitaire
Center
Cut
Carat
1 ct
CustomizableMetal
CustomizableSetting
Solitaire
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 | Octagon Old European Cut Lab Grown Diamond · 7.20 × 7.20 mm · Approx. 1.50 ct (Reference) | 1 ct, 1.5 ct, 2 ct, 2.5 ct, 3 ct, 3.5 ct, 4 ct, 4.5 ct |
| Side Diamonds | 2 Trillion Cut Lab Grown Diamonds · Approx. 0.10 ct Total | Scaled proportionally with the selected center diamond |
| Total Diamond Weight | Approx. 1.60 ct (Reference) | Varies with selected center diamond |
| Stone Type | Lab Grown Diamond | — |
| Setting | Four-Prong Cathedral Basket with Octagonal Bezel Frame | — |
| Finish | High Polish with Milgrain Detail | — |
| Occasion | Engagement · Anniversary · Bridal | — |
At a glance
A vintage octagon lab grown diamond engagement ring from Signora Jewels.
The reference design features an approximately 1.50 ct octagon old European cut lab grown diamond framed by an octagonal milgrain bezel and complemented by two trillion cut lab grown diamonds totaling approximately 0.10 ct. The reference total diamond weight is approximately 1.60 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 octagon center is secured within a four-prong cathedral basket surrounded by a finely detailed octagonal bezel frame. Crisp architectural lines highlight the distinctive outline of the center stone while allowing generous light through the open gallery beneath for exceptional brilliance.
Two trillion cut lab grown diamonds transition gracefully into the engraved shoulders, adding balanced sparkle beside the center stone. Chevron-inspired hand engraving and fine milgrain borders bring vintage character to the tapered band while preserving a clean, elegant profile. Every ring is handcrafted to order by Signora Jewels.
Design Highlights
- Customizable octagon old European cut lab grown diamond from 1 ct to 4.5 ct
- Octagonal milgrain bezel frame
- Two trillion cut side diamonds
- Four-prong cathedral basket
- Hand-engraved vintage shoulders
- High polish finish
Browse our Vintage Engagement Rings, explore the Engagement Ring Guide, or compare precious metals in our Metal Guide.
Diamond Details
| Specification | Details |
|---|---|
| Reference Center Diamond | Octagon Old European Cut Lab Grown Diamond · 7.20 × 7.20 mm · Approx. 1.50 ct |
| Side Diamonds | 2 Trillion Cut Lab Grown Diamonds · Approx. 0.10 ct Total |
| Total Stones | 3 |
| Reference Total Diamond Weight | Approx. 1.60 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 are adjusted to suit the selected center diamond size.
About Lab Grown Diamonds
The octagon old European cut combines vintage-inspired faceting with bold geometric symmetry. The octagonal bezel frame enhances the architectural silhouette, while the trillion side diamonds introduce clean lines that naturally draw the eye toward the center stone.
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 engraved bezel using warm water, mild soap and a soft brush to preserve the brilliance of every lab grown diamond.
FAQ
Why does this ring use an octagonal bezel frame?
The octagonal frame emphasizes the geometric outline of the center diamond while adding extra protection around its edges.
Can I customize the center diamond?
Yes. This design is available with center diamond sizes from 1 ct through 4.5 ct while maintaining the original vintage proportions.
What do the trillion side diamonds add?
The trillion cut side diamonds provide balanced brilliance and create a smooth transition from the center stone into the engraved shoulders.
Is this design comfortable for everyday wear?
Yes. The cathedral basket, tapered shoulders and smooth interior profile are designed to provide secure support and comfortable daily wear.
Common questions
Ring questions, answered
Timing, shipping, certification and return eligibility for made-to-order rings.
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Answers last updated August 2, 2026
When will my order ship?
Standard listed pieces are made to order with an estimated dispatch of 7 business days. Use the product-page estimate when it is more specific and the timing confirmed after ordering. Delivery timing begins after dispatch and varies by destination and carrier service. Fully custom commissions follow the production schedule confirmed with their approved specifications or CAD.
When is insured worldwide delivery free?
Orders of US$500 or more receive free express, insured and tracked worldwide delivery. Below US$500, express, insured and tracked worldwide delivery is charged at the fixed rate shown at checkout.
Will I have to pay import duties?
For every destination available at checkout, Signora prepays applicable import duties and import taxes. Customers should not be asked to pay those import charges again on delivery.
What certificate comes with my jewelry?
Every finished piece includes a Signora Jewelry Certificate. Each selected individual lab-grown center or primary diamond of 0.50 ct or above includes an IGI grading report. Below 0.50 ct, IGI can be arranged by custom request. Custom moissanite and gemstone selections include GRA documentation, with the exact scope confirmed in the approved specifications. The product page or approved specifications state the exact laboratory, report type and scope.
Can I return a made-to-order listed design?
Standard listed products are eligible for return within 30 days after carrier-recorded delivery when unworn, unused and in their original condition, with the original packaging and included documents. Normal listed choices such as metal, stone carat, chain or bracelet length, an extended ring size, or complimentary engraving do not by themselves make an item Final Sale. A sale or discount also does not imply Final Sale; only an item explicitly classified as Final Sale follows the non-returnable exclusion.
How are fully custom orders handled?
A fully custom commission is different from a listed made-to-order design. After its specifications or CAD are approved, a normal change-of-mind return does not apply. Manufacturing defects remain reviewable. Signora may accept an exceptional non-defect return case by case; documented labor and genuinely non-recoverable costs may be deducted, but these deductions are not a restocking fee.