Related Products
Product Details
| Detail | In the photos | Customizable |
|---|---|---|
| Center diamond | Marquise · 20.5 × 10.8 mm · approx. 10.00 ct | 5 ct, 6 ct, 7 ct, 8 ct, 9 ct or 10 ct |
| Accent diamonds | None | None |
| Total diamond weight | approx. 10.00 ct · 1 stone | Varies with selected center weight |
| Stone type | Lab Grown Diamond | — |
| Setting | Six-Prong | Scales with center |
| Band | Cathedral shoulders with ornamental Art Deco scrollwork | — |
| Finish · Occasion | High Polish · Engagement, Anniversary, Bridal | — |
At a glance
A marquise lab grown diamond vintage solitaire engagement ring from Signora Jewels.
The photographed ring carries a 10.00 ct marquise measuring approximately 20.5 × 10.8 mm in a reinforced six-prong setting, with cathedral support and no accent diamonds. Approx. 10.00 ct total. IGI certified.
Made to order in 11 metals: silver, 9K/14K/18K gold (yellow, white, rose) and platinum.
Free insured express shipping over $500, duties prepaid to the US, UK and Canada, 30-day returns.
Each metal color is shown in the photos. Choose a 5 ct, 6 ct, 7 ct, 8 ct, 9 ct or 10 ct center and your preferred metal from the options on this page.
Signora Jewels built this ring around a marquise that needs real structure underneath it. At the photographed 10.00 ct weight, the diamond measures approximately 20.5 mm from point to point and 10.8 mm across, with six prongs securing the tips and long sides.
The setting rises approximately 11.50 mm at that reference weight. Cathedral shoulders widen to about 5.20 mm beside the center, then taper into a 3.20 mm lower shank. Deep scroll carving fills the shoulders, bordered by fine beaded detail instead of accent stones.
Design highlights
- Marquise center options: 5 ct, 6 ct, 7 ct, 8 ct, 9 ct or 10 ct
- Photographed 10.00 ct center measures approximately 20.5 × 10.8 mm
- Six-prong setting protects both pointed ends and supports the long sides
- Reinforced head supported by rising cathedral shoulders
- Ornamental Art Deco scrollwork across approximately 5.20 mm shoulders
- Approx. 3.20 mm lower shank with a High Polish finish
The scale is deliberate. At 10.00 ct, the marquise dominates the top view, while the broad carved shoulders keep the head from looking disconnected from the band. Explore more engagement rings, compare elongated cuts in the diamond stone guide, or review all 11 choices in the metal guide.
Diamond & Ring Details
| Specification | Details |
|---|---|
| Center stone | Marquise · 20.5 × 10.8 mm · approx. 10.00 ct in the photographed design |
| Accent stones | None |
| Total weight / count | approx. 10.00 ct · 1 stone in the photographed design |
| Setting | Six-Prong |
| Structure | Reinforced head with cathedral support |
| Band details | Approx. 3.20 mm lower width · 2.10 mm lower thickness · 5.20 mm shoulder width |
| Setting height | Approx. 11.50 mm at the 10.00 ct reference weight |
| Center options | 5 ct, 6 ct, 7 ct, 8 ct, 9 ct, 10 ct |
| Finish | High Polish |
Measurements are approximate. The selected center weight determines the final diamond dimensions, head proportions and total diamond weight.
About Lab Grown Diamonds
A marquise distributes its carat weight along a long, pointed outline, giving this ring substantial coverage from tip to tip. The photographed 10.00 ct center measures approximately 20.5 × 10.8 mm. The two end prongs guard the pointed tips, while four additional prongs hold the long sides of the diamond.
Metal, Care & Fit
The photographed construction uses approximately 10.45 g of 18K gold before the center is set. Yellow and rose gold put more contrast into the recessed shoulder carving, while white gold and platinum keep the head closer in tone to the diamond. Clean beneath the open setting with warm water, mild soap and a soft brush, and have all six prongs checked after a hard impact.
FAQ
Which center weights are available for this marquise ring?
This design is available with a 5 ct, 6 ct, 7 ct, 8 ct, 9 ct or 10 ct center. The photographed version uses the 10.00 ct option, measuring approximately 20.5 × 10.8 mm.
Why does this oversized marquise use six prongs?
Six prongs secure both pointed tips and add four contact points along the long sides. That distributes support around a center designed to scale from 5 ct through 10 ct.
How high does the 10 ct version sit?
The photographed 10.00 ct setting is approximately 11.50 mm high. Cathedral shoulders rise into the reinforced head from both sides to support that elevated center.
Will the marquise tips catch on clothing?
Dedicated end prongs cover the two pointed tips, but this remains a large, raised marquise design. Take extra care around open knits, lace and gloves, particularly with the larger center options.
Which metal brings out the carved shoulders best?
Yellow and rose gold create stronger visible shadow inside the ornamental scrollwork. White gold and platinum shift more visual attention toward the marquise while retaining the same carved shoulder pattern.