JNCY 3/4 ctw Lab Diamond Four-Prong Stud Earrings Review
Four-prong round lab-grown diamond studs, .75 total carat weight, in 14k white or yellow gold at $595. The title says Certified, though the listing gives no lab or certificate detail. It suits someone who wants plain round studs with push backs.
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Our verdict
A pair of four-prong round lab-grown diamond studs at .75 total carat weight, in white or yellow gold at $595, for someone who wants plain studs with color and clarity stated. Look elsewhere if you need a cut grade, or the Certified label backed by a named lab or certificate in the listing; the title says certified but the text does not.
- Best for
- Someone who wants plain four-prong round lab-grown diamond studs in white or yellow gold.
- Skip if
- You need a cut grade or a named grading lab behind the Certified label.
Why 3.9/5: Lifted by a full spec sheet and a Certified label in the title; held back by the missing cut grade and by the lack of any named lab or certificate detail behind that label.
Two lab-grown round diamonds of .375 ct each make up this pair of JNCY studs, .75 total carat weight (the title says 3/4 ctw), set in four prongs with push backs. 14k white gold and 14k yellow gold are both offered at $595. The title says Certified, but the listing text names neither a certificate nor a grading lab.
Specifications
| Spec | Listing says |
|---|---|
| Color | White, Yellow |
| Earring Length (in) | .125 |
| Earring Width (in) | .125 |
| 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 | .375 |
| Diamond Total Carat Weight | .75 |
Options and pricing
Two metals are offered, 14k white gold and 14k yellow gold, and the variant list shows two variants at the same $595. Per the listing, rhodium plating is for white gold only. The listing gives one stone size, .375 ct per stone, and one back type, push back, with a length and width of .125 in each. There is no carat-weight choice within this listing.
How it compares
The 1 ctw Lab Grown Round Diamond Certified Stud Earrings list $745 with prong-set round stones and clarity VS, against $595 here for .75 total carat weight. For other small diamond pieces, the Diamond Bezel Door Knocker Earrings list $582 with .03 total carat weight, and the 1/4 ctw Round Lab Grown Diamond Huggie Hoop Earrings list $520 with .28 total carat weight.
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 lab-grown round diamonds at .375 ct each, with color (F-G) and clarity (VS) stated
- Both 14k white gold and 14k yellow gold at the same $595
- Prong setting, push back and .125 in length and width are listed
Worth noting
- The diamonds have no cut grade in the listing
- The title says Certified but the listing names no certificate or grading lab
- Only the white gold pair is rhodium plated
Questions before you buy
What diamonds are in these 3/4 ctw studs?
Two round lab-grown diamonds at .375 ct each, .75 total carat weight, with Near Colorless (F-G) color and VS clarity, set in prongs. The listing gives no cut grade.
Which metals and sizes does the listing show?
14k white gold and 14k yellow gold at $595 each. The listing gives a length and width of .125 in, a push back, and rhodium plating on white gold only.
Does the listing say who certified the diamonds?
The title includes the word Certified, but the listing text names no grading lab, report or certificate number.
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
- 3/4 ctw Lab Grown Round Diamond Certified Stud Earrings product page: specs, options and priceSpecs, 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 lab, report or certificate number is named in the listing.
- No cut grade is listed for the stones.
- 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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