Not signed in.   Sign In   Register

Lab-Created: Jewelry For Sale

Home » Loose Stones » Lab-Created
Selling a loose old mine cut lab-created diamond in excellent condition. Purchased from Ouros without grading report. The stone was set once and professionally unset by a jeweler. Beautiful antique-style cut with a soft vintage look and great sparkle. Perfect for a custom ring, pendant, or antique-style setting. Details: Old mine cut lab diamond Approx. 7mm F color VS1 clarity Estimated approx. 1.25–1.50 ct based on measurements/proportions Excellent condition Asking $400 or best offer. Venmo or PayPal preferred. Private seller, final sale/no returns. Email: ts.prakasa@gmail.com
Lab-Created
June 21, 2026
$400
Price is negotiable please reach out For sale is a beautiful loose lab-grown marquise brilliant diamond with an IGI certificate. Diamond Specifications * Carat Weight: 2.03 ct * Shape: Marquise Brilliant * Color: G * Clarity: VS1 * Cut Grade: Very Good * Polish: Excellent * Symmetry: Excellent * Fluorescence: None * Measurements: 13.11 × 6.53 × 4.08 mm * IGI Report #: LG761566393 This diamond is loose (not mounted) and includes the original IGI certification. The report can be independently verified using the IGI report number. The stone has a classic marquise shape with a 2.01 length-to-width ratio, making it ideal for an engagement ring, custom jewelry, or investment in a high-quality lab-grown diamond. The diamond will be packaged securely and shipped fully insured. Please feel free to message me with any questions or if you’d like additional photos or videos.
Lab-Created
June 16, 2026
$700
2.08 ct E VS2 Marquise (IGI LG752506881) Carat Weight: 2.08 ct Color: E Clarity: VS2 Polish: Excellent Symmetry: Excellent Fluorescence: None
Lab-Created
June 12, 2026
$990
12 round loose dimonds Color grade D-E 1.08 CTW
Lab-Created
June 10, 2026
$300
7.10 carat pear brilliant cut, E, VS1 certified lab diamond
Lab-Created
June 5, 2026
$2,500
6×8mm 1.5ct d color gra certification lab created diamond Will ship fed ex or 2day usps
Lab-Created
June 2, 2026
$300
Or best offer
Lab-Created
June 1, 2026
$600
Diamond Details: • 10.25 Carat • Marquise Brilliant • F Color • VS2 Clarity • Measurements: 22.81 x 11.67 x 6.93 mm • Excellent Polish • Excellent Symmetry • No Fluorescence • CVD Lab Grown • Type IIa • IGI Certified – Report #LG715586594 This diamond is loose/unset and will ship securely. The stone has beautiful proportions and faces up incredibly large and bright. Perfect for a custom engagement ring, statement ring, or luxury jewelry project. Please feel free to message with any questions or for additional photos/videos in natural lighting. Reasonable offers will be considered. Serious inquiries only.
Lab-Created
May 26, 2026
$1,100
Stone is too big for my finger. Brand new and certified.
Lab-Created
May 22, 2026
$800
6.23 Carat Cushion Square Lab Diamond. F, VVS2. IGI Certified. Up for sale is an absolute powerhouse of a stone—a loose 6.23-carat Cushion Square Brilliant lab-grown diamond. This stone features an incredible combination of massive visual presence, an icy-white F color grade, and razor-sharp VVS2 clarity. The crystal is beautifully grown with excellent transparency, no fuzziness/strain lines, and maximum fire. It is completely eye-clean and makes a spectacular center stone for a custom luxury project or a major anniversary upgrade. Diamond Specifications: Carat Weight: 6.23 ct Shape: Cushion Square Brilliant Color: F (Colorless) Clarity: VVS2 (Very, Very Slightly Included - completely eye-clean, microscopic characteristics only) Grading Lab: IGI Certified Report Number: LG737503322. (Happy to provide a full PDF scan/link to the report upon request).
Lab-Created
May 19, 2026
$2,900
3.54ct F, VS1 Emerald Cut Lab Diamond. IGI certified. Reviewed by gemologist and this stone is a sparkler!!!! IGI cert included. Purchased for a project that was never completed and the savings is now yours! This stone is stunning and was very carefully screened to have excellent light return and crisp facets without windowing or extinction. Additional photos and video available upon request.
Lab-Created
May 13, 2026
$1,500
4.17ct Emerald Cut Lab Diamond | IGI Certified H VS1 | Elongated 1.44 Ratio Stone Type: Lab Grown Diamond Shape: Emerald Cut (Step Cut) Total Carat Weight: 4.17 ct Color Grade: H (Near-Colorless; faces up bright and white) Clarity Grade: VS1 (Very Slightly Included; completely eye-clean with zero visible inclusions to the naked eye) Cut/Polish/Symmetry: Excellent / Excellent Fluorescence: None Measurements: 11.16 x 7.73 x 5.01 mm Length-to-Width Ratio: 1.44 (The absolute "Golden Ratio" for emerald cuts—perfectly elongated and elegant) Inscribed: “IGI LG632443229”; Includes corresponding IGI Lab Grown Diamond Report. Why this diamond stands out: Massive Finger Coverage: At over 11.1mm in length, this diamond delivers a commanding, elegant presence on the hand, giving the exact look of an expensive custom estate piece. The "Hall of Mirrors" Effect: Poorly cut emerald stones suffer from "windowing" (looking like flat, dead glass). This stone was carefully selected out of numerous certificates for its precise step-cuts that create crisp, bold flashes of light return. Zero Material Tints: This diamond is completely free of the muddy gray or heavy brown undertones that commonly plague lower-tier, mass-produced CVD stones. It is a clean, bright, honest H-color. Condition: Brand new, loose diamond. Never set or worn. Original physical IGI certificate included. In hand, ready to ship! Price: $1,350.
Lab-Created
May 13, 2026
$1,350
4.06ct Oval Lab Diamond | IGI Certified E VVS2 | Ideal 1.36 Proportion Stone Type: Lab Grown Diamond Shape: Oval Brilliant Cut Total Carat Weight: 4.06 ct Color Grade: E (Icy White / Completely Colorless) Clarity Grade: VVS2 (Extremely clean under 10x magnification; absolutely eye-clean) Cut/Polish/Symmetry: Excellent / Excellent Fluorescence: None Measurements: 12.46 x 9.15 x 5.71 mm Inscribed: “IGI LG731569793”; Includes corresponding IGI Lab Grown Diamond Report. Length-to-Width Ratio: 1.36 (The absolute "sweet spot" for ovals—neither stumpy nor too narrow). The Story & Sourcing: I am a private jewelry enthusiast who spent a significant amount of time and effort vetting dozens of IGI certificates to find this exact 4.06ct Oval. I wanted a highly particular set of specifications: a completely colorless "E" grade, an exceptionally clean VVS2 clarity plot, and a classic, elongated 1.36 length-to-width ratio. After finally tracking down this beautiful stone, I have decided that a different diamond shape fits my personal style and design goals much better. Because this stone is brand new, unmounted, and loose, I am passing my careful selection along to someone looking for a top-tier center stone without paying the big-box retail markup. If you want a ring that completely stops traffic, this is it. At 4.06 carats, this oval-cut diamond is an absolute showstopper. Because it’s an oval, it distributes its weight beautifully, giving you massive finger coverage that makes it look even larger than a standard 4-carat stone while beautifully elongating the hand. In hand, ready to ship! $1325 For direct contact: cndungan@yahoo.com
Lab-Created
May 13, 2026
$1,550
Loose Diamelia radiant-cut diamond simulant stone removed from a Tacori platinum engagement ring setting. This stone was originally set as the center stone in a luxury engagement ring and has beautiful sparkle and fire in person. Perfect for: a temporary engagement ring travel jewelry custom jewelry projects replacement stone fashion jewelry someone wanting a large luxury look without diamond pricing Details: Brand: Diamelia Shape: Radiant Cut Approximate Weight: 1.81 ct equivalent Color: Near Colorless / White Type: Diamond simulant / lab-created diamond alternative Condition: Excellent Includes original Diamelia warranty/authenticity card The stone photographs beautifully and has impressive brilliance and clarity. Please note: This is NOT a natural diamond. Priced accordingly and represented transparently. Happy to send additional photos/videos.
Lab-Created
May 11, 2026
$500
1.42ct lab grown emerald cut with excellent symmetry, color, and clarity. Bought it to set on a custom ring but wasn’t the correct style. Message me as I’m open to offers! I can include free accent stones!
Lab-Created
April 29, 2026
$200
2.04 Ct lab grown diamond, great clarity and color. Was going to build a custom ring but not anymore. Message me as I’m open to offers! I have loose accent stones I’ll include for free!
Lab-Created
April 29, 2026
$600
This is a 1.00 carat (6.5mm) round brilliant moissanite, precision-cut and graded D colour, VVS1 clarity — top-tier quality with exceptional optical performance. Moissanite is a lab-grown gemstone known for its unique optical properties. Unlike Diamond, it is doubly refractive, meaning it splits light into two rays. This creates the distinctive facet doubling / “hall of mirrors” effect, giving the stone a deeper, more dynamic sparkle under light. Key characteristics Strong fire & brilliance (higher refractive index than diamond) Near-diamond hardness (9.25 Mohs) — suitable for everyday wear Ethically produced — 100% lab-grown, no mining Excellent value compared to diamond In person, the stone shows: Intense sparkle and light return Sharp, well-defined facet structure Noticeable optical depth from double refraction Included GRA certificate + report number GemDrop verification ID (linked to online database record) Lifetime warranty card Protective presentation case GemDrop verification Each stone is individually recorded in the GemDrop database and can be verified online. The record matches your exact stone specifications (size, cut, quality), providing a transparent and traceable reference. Suitable for Rings, earrings, pendants, or custom projects Buyers who appreciate strong fire and optical performance Anyone looking for a high-quality alternative to diamond Condition: Flawless / unused UK-based seller. Fast dispatch.
Lab-Created
April 18, 2026
$14.99
Lot of 19 premium loose moissanite gems totaling 44+ carats. Mostly round brilliant cut with a few fancy shapes, in a range of colors: white, off-white, blue, green, gray, and amber. All gems are excellent cut and clarity, authentic (see photo), and were purchased for personal jewelry projects that never came to fruition. Priced well below what you’d pay sourcing these individually. At current market rates for high-quality moissanite per carat, this lot is a strong value that’s ideal for a jeweler, custom designer, or reseller looking to move them individually. TAGS: jewelry ring necklace bracelet diamond gold silver sapphire ruby emerald opal princess charles&colvard lab emerald princess hearts&arrows
Lab-Created
March 29, 2026
$400
This lab diamond is ready to be mounted in a cocktail ring mounting or an engagement ring setting of your choice! I bought 2 stones for my wife and she went to the smaller 3.50 carat pear shaped lab diamond and that shocked me. Some lucky guy or gal will want this stone on their finger. See accompanying papers, and IGI tech report. All will be provided to buyer. I can accept Zelle/MasterCard/VISA Card/or Bank Debit Cards.
Lab-Created
March 27, 2026
$3,750
Beautiful ring lab grown originally $3,000 negotiable for the right asking price. PERFECT CONDITION size 5.5 can get it sized if needed and a free cleaning before giving it away.
Lab-Created
March 24, 2026
$1,000