JNCY 7-Stone Contour Marquise and Round Wedding Band Review
A 1.5 mm curved band with 7 lab-grown marquise and round diamonds totaling .375 carat weight, in 14k white, yellow or rose gold and sizes 4 to 10, at $900. It suits someone who wants a small number of stones on a narrow band.
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Our verdict
Suits someone who wants a few marquise and round lab-grown diamonds, .375 total carat weight, on a 1.5 mm band at $900 in three golds. Look elsewhere if you need a certificate or a shape-by-shape count; the listing gives neither. The main caveat is that the total and per-stone weights are given without a breakdown.
- Best for
- Someone who wants 7 marquise and round lab-grown diamonds on a narrow curved band.
- Skip if
- You need a certificate or a split of marquise and round stones stated in the listing.
Why 3.8/5: Lifted by a full spec sheet with count, grades and weights, and one price across 78 variants. Held back by the missing shape split and no stated certificate.
A set of 7 lab-grown diamonds, marquise and round in alternation, sits on this JNCY contour band, which lists .375 total carat weight. The store describes a curved ring, and the width line gives 1.5 mm with a weight of 3.11 g. The metal is 14k white, yellow or rose gold, and all 78 variants cost $900.
Specifications
| Spec | Listing says |
|---|---|
| Color | White, Yellow, Rose |
| Weight (grams) | 3.11 |
| Count | 7 |
| Total Carat Weight | .375 |
| Rhodium Plated | White Gold Only |
| Diamond Stone Type | Diamond |
| Diamond Creation Type | Lab Grown |
| Diamond Shape | Marquise and Round |
| Diamond Color | Near Colorless (F-G) |
| Diamond Color Hue | White |
| Diamond Clarity | SI1+ |
| Diamond Carat Weight | .05 |
Options and pricing
Three gold colors, 14k white, yellow and rose, and 26 size values from 4 to 10 give 78 variants, all at $900. In the plating line, rhodium is given for white gold only. The width is 1.5 mm and the weight is 3.11 g. The diamond line lists marquise and round shapes with a count of 7 but does not split the count between the two shapes.
How it compares
The Marquise and Round Diamond Contour Band lists the same shapes at $850 with .32 total carat weight, against $900 and .375 here. The Open Marquise and Round Diamond Ring lists $950 with .25 total carat weight, and the Chevron Graduated Diamond Wedding Band lists $950 with .75.
Shipping, returns and warranty
JNCY ships by USPS at no cost and says most items are made to order, about two weeks, with an estimated ship date on the product page (FedEx 2Day is $25 on US orders and does not shorten production). A signature is required on engagement rings, made-to-order designs and orders over $1,500. It also ships to Australia, Canada, France, Germany, Ireland, Italy, South Korea and the United Kingdom for a flat $50, with duties and taxes paid by the buyer. Returns: 30 days from the ship date for pre-designed styles returned unworn with their original documents, with a free FedEx label on US orders; the FAQ page says 7 days instead, so confirm before relying on 30. Warranty: free lifetime repair or replacement of manufacturing defects, one free resizing in the first year for standard ring sizes 4 to 10 (not eternity bands) and two free cleaning visits; wear and tear, lost stones and clearance items are excluded.
Before you buy
JNCY Jewelers is a Miami jeweler whose domain was registered in 2020. Independent feedback is thin: a ProvenExpert page lists three ratings, all 5.00, from Facebook and The Knot with no review text, and searches on 19 October 2026 found no Trustpilot or BBB page for the store. JNCY's own pages disagree in places: the refund window is 30 days on the Refund policy page and 7 days in the FAQ, and the custom-bridal page says it offers no financing while the financing page lists several plans. Payments accepted include major cards, Affirm, Shop Pay and PayPal.
What we liked
- 7 lab-grown diamonds with stated shapes (marquise and round), color (F-G) and clarity (SI1+)
- A total of .375 carat weight, with .05 carat weight listed for each stone
- Width of 1.5 mm, weight of 3.11 g and plating status are given
- One price, $900, covers every metal and size
Worth noting
- The listing does not split the 7 stones between marquise and round
- A single weight, 3.11 g, is listed for every metal and size
- The listing mentions no paperwork for the diamonds
Questions before you buy
What diamonds are set in this band?
7 lab-grown diamonds in marquise and round shapes, near colorless (F-G), white hue, clarity SI1+, .05 carat weight each and .375 total carat weight.
Which metals and sizes does it come in?
14k white, yellow and rose gold, sizes 4 to 10 (26 size values). 78 variants, all $900, with rhodium listed for white gold only.
Is the diamond weight given per stone or in total?
Both: .05 carat weight for each stone and .375 total carat weight, with no breakdown by shape.
Can I return it if I change my mind?
JNCY's Refund policy page gives 30 days from the ship date for pre-designed styles returned unworn with their original documents; US orders get a free FedEx label and international buyers pay return shipping. A missing diamond certificate costs $100. The FAQ page says refunds are possible for up to 7 days after delivery, so confirm the window before relying on 30 days.
How long until it ships?
JNCY says most items are made to order and take about two weeks; the product page, cart and order email show an estimated ship date. USPS shipping is free, and FedEx 2Day ($25 on US orders) does not shorten production.
Does JNCY resize rings?
The warranty page offers one complimentary resizing within a year of purchase for standard ring styles in sizes 4 to 10, up or down one size, except eternity bands; larger changes may cost extra, and rings resized by another jeweler lose the warranty.
Are lab-grown diamonds real diamonds?
GIA says laboratory-grown diamonds have the same crystal structure as natural diamonds, tightly bonded carbon atoms, and nearly the same chemical, optical and physical properties. By eye the difference can be indistinguishable, but gemological laboratories can detect the different growth history with advanced instruments. They are grown by high-pressure high-temperature (HPHT) or chemical vapor deposition (CVD).
Sources & verification
What this review is based on and the day we last read it. Specs and claims from the maker are the maker’s own; the verdict and the rating are ours.
From the store
- Contour Marquise and Round Diamond Wedding Band product page: specs, options and price (the buy buttons go there)Specs, options and the listed priceRead October 19, 2026
- JNCY Jewelers shipping policyFree USPS shipping, processing times, signature rules, international countries and flat feeRead October 19, 2026
- JNCY Jewelers refund policy30-day returns for pre-designed styles, final-sale and custom items, certificate feeRead October 19, 2026
- JNCY Jewelers warranty pageLifetime manufacturing warranty, free resizing and cleaning in year one, exclusionsRead October 19, 2026
- JNCY Jewelers FAQReturn wording (7 days), payment methods, care tips, international termsRead October 19, 2026
Independent
- ProvenExpert page for JNCY JewelersThree ratings, all 5.00 (two on Facebook, one on The Knot), no review textRead October 19, 2026
- GIA: simulants, moissanite and laboratory-grown diamondsLab-grown diamonds share the crystal structure and nearly the same properties as natural diamondsRead October 19, 2026
What we couldn’t verify
- The listing does not say how many of the 7 stones are marquise and how many are round.
- No certificate is stated for the lab-grown diamonds.
- Independent testing or appraisal: we found none for this piece; the only outside feedback is a ProvenExpert page with three 5.00 ratings (two Facebook, one The Knot) and no text.
- JNCY's pages disagree on the refund window (30 days on the Refund policy page, 7 days in the FAQ).
Spotted an error or something out of date? Tell us and we’ll fix it and update the date.
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