Marquise Cathedral Solitaire Lab-Grown Diamond Ring
Marquise Cathedral Solitaire Lab-Grown Diamond Ring
Marquise Cathedral Solitaire Lab-Grown Diamond Ring
Under 1 ct
1 to 2 ct
2 to 3 ct
3 to 5 ct
5 ct and above
Not sure which carat to choose?See how each size looks on a finger.
Not sure of your size? Choose Size later and we'll contact you after you order to confirm it.
Carat size on the finger
Drawn to scale on a size 6 finger (16.5 mm wide). Sizes are approximate face-up measurements.
Carat is weight, not size. A 2.00 ct stone looks about 25–30% wider than a 1.00 ct, not twice as wide. On a slimmer finger the same stone looks bigger.
Diamond colour & clarity
Colour runs from D, with no colour at all, towards a faint yellow. D–F look icy white. G–H look white once set, especially in yellow or rose gold.
Clarity is how many tiny natural marks a diamond has. From VS1 upwards they can't be seen without 10× magnification.
| Grade | What it means |
|---|---|
| FL · IF | Flawless — nothing seen at 10× |
| VVS1 · VVS2 | Very, very slight — very hard to find at 10× |
| VS1 · VS2 | Very slight — eye-clean, minor marks at 10× |
| SI1 · SI2 | Slight — usually eye-clean in smaller stones |
| I1 | Included — marks may be visible to the eye |
Ring size guide
Measure a ring that already fits, or wrap a strip of paper around your finger. If you're between sizes, go up one.
| US | UK | EU | Inside diameter | Circumference |
|---|---|---|---|---|
| 3.0 | F½ | 44 | 14.1 mm | 44.2 mm |
| 3.5 | G½ | 45 | 14.5 mm | 45.5 mm |
| 4.0 | H½ | 47 | 14.9 mm | 46.8 mm |
| 4.5 | I½ | 48 | 15.3 mm | 48.0 mm |
| 5.0 | J½ | 49 | 15.7 mm | 49.3 mm |
| 5.5 | K½ | 50 | 16.1 mm | 50.6 mm |
| 6.0 | L½ | 52 | 16.5 mm | 51.9 mm |
| 6.5 | M½ | 53 | 16.9 mm | 53.1 mm |
| 7.0 | N½ | 54 | 17.3 mm | 54.4 mm |
| 7.5 | O½ | 55 | 17.7 mm | 55.7 mm |
| 8.0 | P½ | 57 | 18.1 mm | 57.0 mm |
| 8.5 | Q½ | 58 | 18.5 mm | 58.2 mm |
| 9.0 | R½ | 59 | 18.9 mm | 59.5 mm |
| 9.5 | S½ | 60 | 19.4 mm | 60.8 mm |
| 10.0 | T½ | 62 | 19.8 mm | 62.1 mm |
| 10.5 | U½ | 63 | 20.2 mm | 63.3 mm |
| 11.0 | V½ | 64 | 20.6 mm | 64.6 mm |
| 11.5 | W½ | 65 | 21.0 mm | 65.9 mm |
| 12.0 | Y | 67 | 21.4 mm | 67.2 mm |
| 12.5 | Z | 68 | 21.8 mm | 68.5 mm |
| 13.0 | Z+1 | 69 | 22.2 mm | 69.7 mm |
- Wrap a strip of paper around the base of your finger, snug but not tight.
- Mark where it overlaps and measure the length in mm. That's your circumference.
- Find the nearest circumference above. Measure at the end of the day, when fingers are largest.
Still unsure? Choose Size later in the size list. We'll contact you after you order to confirm your size before we start making your ring.
Highlighting a clean silhouette, this cathedral solitaire ring holds a marquise lab-grown diamond anchored by six prongs. Sweeping cathedral shoulders lift the center setting, while an open gallery lets light reach the stone. Completed with a high-polish soft flat shank, this design balances structured lines with easy everyday wear in your choice of metals.
At a glance
- Marquise lab-grown diamond centre stone
- Six-prong setting
- Cathedral Solitaire setting
- Open Gallery gallery
- Cathedral shoulders
- High Polish Soft Flat shank
- Available in 5 metals (Yellow Gold, Rose Gold, White Gold +more)
The lifted cathedral architecture and six-prong frame give the elongated marquise lab-grown diamond a prominent, structured presence on the finger. People choose this design for its clean geometry and the smooth comfort of its high-polish soft flat band during daily wear.
Centered on an elongated shape, this ring features a marquise lab-grown diamond held by six protective prongs. The cathedral setting uses sloped shoulders that curve upward from the band, elevating the central stone and giving the piece a distinct architecture. Below the lab-grown diamond, an open gallery exposes the sides of the stone to light, brightening its presentation from every viewing angle. The band itself is crafted with a soft flat profile, offering a smooth interior contour that rests flush against neighboring fingers. A high-polish finish reflects light along the entire band, emphasizing its clean edges and refined construction. Available in yellow gold, rose gold, white gold, silver, or platinum, this unadorned solitaire design focuses entirely on the geometry of the marquise lab-grown diamond and the structural balance of its six-prong cathedral framework.
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Why this ring
Elongated Marquise Silhouette
The tapered ends of the marquise lab-grown diamond create a lengthening visual effect on your finger.
Six-Prong Security
Six sturdy prongs firmly grip the pointed ends and sides of the stone, providing peace of mind during everyday activities.
Elevated Cathedral Architecture
Arched shoulders raise the center setting off the band, giving the solitaire a striking profile from the side.
Light-Catching Open Gallery
An unblocked lower setting allows maximum light to pass through the lab-grown diamond for clear visual output.
Smooth Soft Flat Shank
The gently squared exterior and soft inner edges ensure the band feels smooth against adjacent fingers throughout the day.
Details
- Stone Shape: Marquise lab-grown diamond
- Prong Setting: Six-prong
- Setting: Cathedral Solitaire
- Gallery: Open Gallery gallery
- Shoulders: Cathedral shoulders
- Band / Shank: High Polish Soft Flat shank
- Metal Options: Yellow Gold, Rose Gold, White Gold, Silver, Platinum
FAQs
How does a six-prong setting protect a marquise lab-grown diamond?
The six prongs anchor both pointed tips and the side curves, safeguarding the stone's delicate corners from accidental impacts.
What benefit does an open gallery provide on this solitaire?
An open gallery leaves the underside of the stone exposed, allowing light to enter freely and making routine cleaning easier.
How does a soft flat shank feel on the finger?
A soft flat shank combines flat outer edges with smoothed inner corners, offering a secure fit without digging into surrounding fingers.
Can I order this cathedral setting in different metal types?
Yes, this design is available in yellow gold, rose gold, white gold, silver, and platinum to match your personal preference.
Are there accent stones on the shoulders of this ring?
No, this is a pure solitaire ring with unadorned cathedral shoulders that focus full attention on the central marquise lab-grown diamond.
