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Radiant Lab Grown Diamond Trapezoid Engagement Ring
1 of 11
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
Radiant Cut · Three Stone
Center
Radiant Cut
Carat
1 ct
CustomizableMetal
CustomizableSetting
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.
The photos show a 3.00 ct radiant center with two trapezoid side diamonds. Select the center weight and metal in the options on this page.
| Detail | In the photos | Customizable |
|---|---|---|
| Center diamond | Radiant · approx. 10.76 × 6.96 × 4.60 mm · 3.00 ct | Yes · 1.00–4.50 ct |
| Side diamonds | 2 trapezoid diamonds · approx. 5.00 × 6.00 × 3.50 mm each | Included in the three-stone setting |
| Side diamond weight | Approx. 1.40 ct total | Setting scales with the selected center |
| Total diamond weight | Approx. 4.40 ct | Changes with the selected center weight |
| Setting | Prong-set three-stone basket | Proportions scale with the center diamond |
| Metal | Rose gold shown | 11 metal and color options |
| Reference size | US 8 | Choose your required ring size |
| Stone type | Lab Grown Diamond | Lab Grown Diamond |
| Finish | High polish | Included |
Diamond details
| Shape | Size | Qty | Weight (approx.) |
|---|---|---|---|
| Radiant center | 10.76 × 6.96 × 4.60 mm | 1 | 3.00 ct |
| Trapezoid side diamonds | 5.00 × 6.00 × 3.50 mm each | 2 | 1.40 ct total |
| Total | — | 3 | 4.40 ct |
At a glance
A radiant lab grown diamond trapezoid three-stone engagement ring from Signora Jewels.
The reference design holds an IGI-certified 3.00 ct radiant center measuring approx. 10.76 × 6.96 × 4.60 mm, with two trapezoid side diamonds totaling approx. 1.40 ct.
Made to order in 11 metals: silver, 9K/14K/18K gold in yellow, white or rose, and platinum.
Made to order in your selected center weight, metal and ring size. Review our engagement ring guide before choosing the center size.
Signora Jewels sets the radiant between two broad trapezoids that meet its straight sides without leaving dark gaps. The reference center measures 10.76 × 6.96 mm, so the three stones read as one continuous span across the finger.
The radiant sits in four corner prongs, with each trapezoid angled toward the shank. Light enters through the open sides of all three baskets, while the plain lower band keeps the 4.40 ct reference layout from feeling crowded between the fingers.
Design highlights
- Radiant lab grown diamond center, customizable from 1.00 to 4.50 ct
- Reference center measures approx. 10.76 × 6.96 × 4.60 mm
- Two trapezoid side diamonds totaling approx. 1.40 ct
- Approx. 4.40 ct total diamond weight in the reference design
- Prong-set three-stone basket with open sides
- Plain high-polish lower shank
- Reference size US 8
- Made to order in 11 metal and color options
The trapezoids widen toward the center, so their outer edges taper cleanly into the band. That geometry gives this ring a stronger shoulder line than round or pear side stones. Explore more three-stone rings built around shaped accents.
Diamond & Ring Details
The reference ring contains one 3.00 ct radiant center and two 0.70 ct trapezoid side diamonds, totaling approx. 4.40 ct. Selecting another center weight scales the center basket and adjoining shoulders while preserving the same radiant-and-trapezoid arrangement.
About Lab Grown Diamonds
A radiant cut combines clipped corners with a brilliant-style facet pattern. The center throws shorter flashes through its rectangular outline, while the step-like trapezoids return broader bands of light at the sides.
Lab grown diamonds have the same crystal structure, hardness and optical properties as mined diamonds. Read how grading and origin work in our lab grown diamond guide.
Metal, Care & Fit
Choose sterling silver, 9K, 14K or 18K gold in yellow, white or rose, or platinum. The reference size is US 8. Clean beneath the three baskets with warm water, mild soap and a soft brush, then rinse and dry thoroughly. Remove the ring before swimming, lifting weights or applying lotion.
FAQ
Can I change the radiant center diamond size?
Yes. The radiant center is available from 1.00 to 4.50 ct, and the basket and shoulders scale with the selected weight.
What is the total diamond weight in the reference design?
The reference design is approx. 4.40 ct total, made from a 3.00 ct radiant center and two trapezoid side diamonds totaling approx. 1.40 ct.
How large are the trapezoid side diamonds?
Each trapezoid measures approx. 5.00 × 6.00 × 3.50 mm and weighs approx. 0.70 ct.
How does a three-stone ring compare with a solitaire?
A three-stone ring spreads more diamond width across the finger, while a solitaire concentrates the entire face-up view on one center stone.
What is the difference between 9K and 18K gold?
18K gold contains more pure gold and has a richer color, while 9K gold is harder and more resistant to everyday surface wear.
Is the center diamond ?
Yes. Every Signora Jewels center diamond ships with an IGI report and a matching laser-inscribed identification number.
Can the ring be resized?
Yes. The plain lower shank allows most gold and platinum versions to be resized by a qualified jeweler.