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Marquise|Lab Grown|IGI

3.28ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG817694105

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817694105

Diamond specifications and retailer prices

From £317 GBP
$425 USD
As of November 1, 2026
Save £1,982 GBP (86%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,299 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.28ct lab-grown marquise diamond

This 3.28ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG817694105 or 817694105. Listed at 4 retailers as of October 30, 2026, with prices from £317 to £2,299, a £1,982 spread on the same certified stone. Brilliant Earth lists it at £2,299. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.28
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817694105
Dimensions14.59 × 7.77 × 5.02 mm
L/W Ratio1.88
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.59 mm7.77 mm3.28 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817694105
Side View
Table 59.0%Crown 36.1°Girdle: MED-STKPavilion 41°Culet: NoneDepth 64.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £2,299 GBP|Low: £317 GBP|High: £2,299 GBP|Avg: £1,306 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 3£317 GBP
Retailer 2£599 GBP
Retailer 4£1,810 GBP
Brilliant Earth£2,299 GBP

38 data points across 4 retailers

4 retailers£317 GBP to £2,299 GBP

A
Cheapest Retailer
-
£317 GBP
$425 USD
Final sale: no returns
A
Retailer 2
-
£599 GBP
View
Retailer 3
-
£1,810 GBP
$2,425 USD
View
Price last confirmed 15 days ago
Most Expensive
B
Brilliant Earth
21228711A · Oct 30
£2,299 GBP
$3,080 USD
View
3 more retailers have this diamond
Prices start from £317 GBPSave up to £1,982 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.28ct Marquise
£317 GBP