How is the lab-grown diamond held in this setting?

The marquise lab-grown diamond is held by six prongs within a cathedral setting.

Are there any accent stones in this ring?

No, this design is a solitaire ring without accent stones.

What metal options can be selected for this ring?

This ring can be ordered in yellow gold, rose gold, white gold, silver, or platinum.

What features define the gallery of this ring?

The gallery includes a bridge accent beneath the cathedral setting holding the marquise lab-grown diamond.

Marquise Cathedral Lab-Grown Diamond Solitaire Ring

Diamond Shape —

Metal —

Carat —

Diamond Quality

Color —

Clarity —

Ring Size —

Not sure of your size? Choose Size later and we'll contact you after you order to confirm it.

$699Made to order · Ships by 15 working days

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.

Colourless · D E FNear colourless · G H I JFaint · K L M

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.

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Certified diamonds Larger centre diamonds come certified, with a grading report.

Ships by —Made to order for you. Free shipping.

Lifetime care Free cleaning and check-ups for life, with easy returns and warranty support.

Built to highlight shape and structure, this solitaire ring mounts a marquise lab-grown diamond within a cathedral setting. Six individual prongs anchor the slender gem securely above a bridge accent gallery. Tapered shoulders channel focus upward, flowing seamlessly into a smooth, high-polish round shank available in platinum, silver, or gold options.

At a glance

Marquise lab-grown diamond centre stone
Six-prong setting
Cathedral setting
Bridge Accent gallery
Tapered Cathedral shoulders
High Polish Round shank
Available in 5 metals (Yellow Gold, Rose Gold, White Gold +more)

The elevated cathedral architecture and pointed marquise profile create a striking, elongated look on the finger. Wearers seeking a classic solitaire with additional structural support will appreciate the secure six-prong mounting and smooth high-polish band.

Centering an elongated marquise lab-grown diamond, this solitaire ring balances traditional craftsmanship with deliberate architectural details. The primary gem rests within a custom cathedral setting, lifted off the finger by sweeping archways that create an open profile. Six protective prongs grip the center stone at key points, guarding the delicate pointed ends while maintaining clear light passage. Beneath the setting, a bridge accent gallery adds refined strength to the frame. The band transitions into tapered cathedral shoulders that narrow as they meet the head, visually lengthening the hand. Further down, the round shank delivers a balanced feel on the finger, finished with a smooth high polish across the exterior. Select your preferred metal from yellow gold, rose gold, white gold, silver, or platinum to complete this unadorned solitaire design.