JNCY Open Marquise and Round Lab Diamond Ring Review
A 2 mm wedding ring with 8 marquise and round lab-grown diamonds totaling .25 ctw, offered in 14k white, yellow or rose gold at $950. The store styles it to sit beside an engagement ring, stack with other rings or be worn alone.
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Our verdict
A small-diamond band at $950 for people who want to stack it or place it next to an engagement ring. Shoppers who want more carat weight at the same price can compare the 1 ctw channel-set band, and anyone who needs a named certificate or a cut grade will not find one here. The main caveat is that the description and the shape line do not match on stone shapes.
- Best for
- A buyer who wants a small-diamond ring to stack or to wear beside an engagement ring.
- Skip if
- You need a cut grade, a certificate or a stated count of each stone shape.
Why 3.8/5: Lifted by a full spec sheet covering metal, stone count, color, clarity, width and weight at a single price; held back by the missing cut grade and certificate and by the unclear split between marquise and round stones.
The Open Marquise and Round Diamond Ring is a 2 mm band in 14k gold that carries 8 lab-grown diamonds in marquise and round shapes, .25 ctw in all. JNCY prices it at $950, and the 78 variants, built from 14k white, yellow and rose gold in 26 sizes, all share that price. The store text pitches it to complement an engagement ring, stack with other rings or be worn by itself.
Specifications
| Spec | Listing says |
|---|---|
| Color | White, Yellow, Rose |
| Weight (grams) | 2.2 |
| Count | 8 |
| Total Carat Weight | .25 |
| 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 | .03 |
Options and pricing
Metals are 14k white, yellow and rose gold, and sizes run from 4 to 10 across 26 sizes, giving 78 variants at one price of $950. Rhodium plating is listed for white gold only. The listing gives a 2 mm width, a 2.2 g weight and .03 ct per stone, but no cut grade and no breakdown of how many stones are marquise and how many are round.
How it compares
The Contour Marquise and Round Diamond Wedding Band uses the same shape pairing at $900 with .375 total carat weight, and the Marquise and Round Diamond Contour Band lists $850 with .32 total carat weight. This ring lists $950 for .25 total carat weight. The 1 ctw Round Lab Grown Diamond Channel Set Eternity Band is also $950 but lists 1.00 total carat weight in round stones only.
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
- Marquise and round diamonds with stated color (F-G) and clarity (SI1+) grades
- A single $950 price covers three 14k gold colors and 26 sizes
- The store pitches it as a ring that sits beside an engagement ring or stacks with others
- Width (2 mm) and weight (2.2 g) are listed
Worth noting
- At .25 ctw across 8 stones, each diamond is listed at only .03 ct
- The description mentions graduated round diamonds while the shape line adds marquise, and no split between the two is given
- The diamond details have no cut line and name no certificate
Questions before you buy
What stones are in the Open Marquise and Round Diamond Ring?
The listing names 8 diamonds with a lab-grown creation type, in marquise and round shapes, at .03 ct each and .25 ctw in total. Color is near colorless (F-G) and clarity is SI1+.
Which metals and sizes does it come in?
14k white, yellow and rose gold in sizes 4 to 10, which makes 78 variants at $950. Rhodium plating is listed for white gold only.
How wide is the ring?
The listing gives a 2 mm width and a weight of 2.2 g.
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
- Open Marquise and Round Diamond Ring 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 description says graduated round diamonds, but the shape line says marquise and round; the listing does not say how many of the 8 stones are each shape.
- Neither a cut grade nor a certificate appears in the listing.
- 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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