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Marquise|Lab Grown|IGI

3.51ct G VVS2 Marquise Lab Grown Diamond

ID • G/VVS2 • IGI LG830677496

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG830677496

Diamond specifications and retailer prices

From £373 GBP
$500 USD
As of October 27, 2026
Save £1,766 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,139 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG830677496 or 830677496. Listed at 18 retailers as of October 27, 2026, with prices from £373 to £2,139, a £1,766 spread on the same certified stone. Rare Carat lists it at £2,139. 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

3.51
Carat
G
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830677496
Dimensions14.64 × 7.84 × 5.03 mm
L/W Ratio1.87
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.64 mm7.84 mm3.51 ctG / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830677496
Side View
Table 63.0%Crown 35.6°Girdle: STK-THKPavilion 40.1°Culet: NoneDepth 64.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: £2,139 GBP|Low: £358 GBP|High: £2,146 GBP|Avg: £982 GBP|-0.3%
Rare Carat
Retailer 2
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Retailer 19
October 29, 2026
Retailer 18£373 GBP
Retailer 9£417 GBP
Retailer 17£417 GBP
Retailer 4£461 GBP
Retailer 14£461 GBP
Retailer 2£491 GBP
Retailer 5£592 GBP
Retailer 13£592 GBP
Retailer 10£694 GBP
Retailer 12£765 GBP
Retailer 6£975 GBP
Retailer 3£997 GBP
Retailer 19£1,191 GBP
Retailer 15£1,214 GBP
Retailer 11£1,503 GBP
Retailer 7£1,602 GBP
Retailer 8£1,727 GBP
Retailer 16£1,930 GBP
Rare Carat£2,139 GBP

34 data points across 19 retailers

18 retailers£373 GBP to £2,139 GBP

A
Cheapest Retailer
-
£373 GBP
$500 USD
A
Retailer 2
-
£417 GBP
$559 USD
View
Retailer 3
-
£461 GBP
$619 USD
View
Price last confirmed 23 days ago
Retailer 4
-
£461 GBP
$619 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£491 GBP
View
B+
Retailer 6
-
£592 GBP
$795 USD
View
Retailer 7
-
£592 GBP
$795 USD
View
Price last confirmed 6 days ago
A
Retailer 8
-
£694 GBP
$931 USD
View
A
Retailer 9
-
£765 GBP
View
A
Retailer 10
-
£975 GBP
$1,309 USD
View
Retailer 11
-
£997 GBP
ZAR 21,608 ZAR
View
Price last confirmed 19 days ago
Retailer 12
-
£1,191 GBP
$1,598 USD
View
Price last confirmed 8 days ago
B+
Retailer 13
-
£1,214 GBP
$1,629 USD
View
B
Retailer 14
-
£1,503 GBP
$2,018 USD
View
B+
Retailer 15
-
£1,602 GBP
$2,149 USD
View
B+
Retailer 16
-
£1,727 GBP
$2,318 USD
View
Retailer 17
-
£1,930 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Rare Carat
546/20A_l_830677496 · Oct 28
£2,139 GBP
$2,870 USD
View
17 more retailers have this diamond
Prices start from £373 GBPSave up to £1,766 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
3.51ct Marquise
£373 GBP