JNCY 4 ctw Lab Diamond Round Four-Prong Stud Earrings Review
Round lab-grown diamond studs in 14k white or yellow gold, listed at 4.00 ctw across two stones of 2.00 ct each, for $3,495. They suit a shopper who wants round studs at that weight and is content to choose only between two metals.
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Our verdict
Suited to someone who wants a pair of round lab-grown studs at 4.00 ctw and is happy to choose between white and yellow 14k gold at $3,495. Look elsewhere if you need a named grading lab, a cut grade or stone dimensions before buying, because the listing text gives none of them. The main caveat is that the title says certified while the listing describes no certificate.
- Best for
- Someone who wants round lab-grown diamond studs at 4 ctw in white or yellow 14k gold.
- Skip if
- You need a named grading lab, a cut grade or stone dimensions stated in the listing.
Why 3.9/5: Lifted by a full spec sheet with color and clarity grades and by a title that states the diamonds are certified; held back by the missing cut grade and the absence of any certificate details in the listing text.
Two round lab-grown diamonds of 2.00 ct each make up the 4.00 ctw total in these JNCY stud earrings, held in a four-prong setting with push backs. The metal is 14k white or yellow gold, and both versions cost $3,495, so the only decision is the color of the gold. The listing states near colorless (F-G) color and VS clarity for the stones but gives no cut grade.
Specifications
| Spec | Listing says |
|---|---|
| Color | White, Yellow |
| Earring Length (in) | .33 |
| Earring Width (in) | .33 |
| Backing | Push Back |
| Setting | Prong Setting |
| Rhodium Plated | White Gold Only |
| Diamond Stone Type | Diamond |
| Diamond Creation Type | Lab Grown |
| Diamond Shape | Round |
| Diamond Color | Near Colorless (F-G) |
| Diamond Color Hue | White |
| Diamond Clarity | VS |
| Diamond Count | 2 |
| Diamond Carat Weight | 2.00 |
| Diamond Total Carat Weight | 4.00 |
Options and pricing
There are 2 variants, 14k yellow gold and 14k white gold, and both are priced at $3,495. The variants differ by metal only, since the earrings have no size option; the listing gives the length and width as .33 in each. Rhodium plating is listed for white gold only. A single set of diamond details covers both metals.
How it compares
Among JNCY's round studs, the 3 ctw Lab Grown Round Diamond Certified Stud Earrings list $2,400 and the 2 ctw Lab Grown Round Certified Diamond Stud Earrings list $1,995, both with a prong setting and the same near colorless (F-G) and VS grades, against $3,495 here for 4 ctw. The 2 Ctw Oval Cut Lab Grown Diamond Certified Stud Earrings list $3,000 with oval stones instead of round.
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 and two free cleaning visits in the first year; 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. The listing mentions a diamond certificate; check the report number against the listing when the piece arrives and keep the paperwork, because JNCY charges $100 for a missing one on returns. Payments accepted include major cards, Affirm, Shop Pay and PayPal.
What we liked
- Two round lab-grown diamonds of 2.00 ct each, 4.00 ctw in total, with near colorless (F-G) color and VS clarity stated
- Both metals, 14k white and 14k yellow gold, cost the same $3,495, so the choice is about color only
- The setting and backing are named: prong setting with push backs
- Earring length and width are both given, .33 in each
Worth noting
- No cut grade is given in the diamond details, only color and clarity
- The title says certified, but no grading lab or certificate number appears in the listing text
- No weight and no stone dimensions in millimeters are listed, only the .33 in length and width
- The only option is the metal; there is no choice of stone size or quality at a different price
Questions before you buy
What stones are in these 4 ctw stud earrings?
Two round lab-grown diamonds of 2.00 ct each, 4.00 ctw in total. The listing gives near colorless (F-G) color and VS clarity and does not give a cut grade.
Which metals and settings does this pair come in?
14k white gold and 14k yellow gold, both at $3,495. The listing names a prong setting with push backs, and rhodium plating applies to white gold only.
Does the listing say these diamonds are certified?
The title says certified, but the listing text does not name a grading lab or give a certificate number, so the certification details are not stated.
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.
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
- 4 ctw Lab Grown Round Diamond Certified Stud Earrings 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 title says certified, but no grading lab, certificate number or cut grade appears in the listing text.
- No weight or stone dimensions in millimeters are listed; the only size figures are .33 in for length and width.
- 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).
- We have not seen this piece's diamond certificate; the grades come from the listing.
Spotted an error or something out of date? Tell us and we’ll fix it and update the date.
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