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Marquise|Lab Grown|IGI

4.51ct G VS2 Marquise Lab Grown Diamond

EX • G/VS2 • IGI LG769653941

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG769653941

Diamond specifications and retailer prices

From $975 USD
As of November 2, 2026
Save $2,161 USD (69%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,340 USD at Brilliant Earth · As of October 14, 2026
View at Brilliant Earth

About this 4.51ct lab-grown marquise diamond

This 4.51ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG769653941 or 769653941. Listed at 13 retailers as of November 1, 2026, with a 222% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.51
Carat
G
Color
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG769653941
Dimensions17.46 × 8.68 × 5.24 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.46 mm8.68 mm4.51 ctG / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG769653941
Side View
Table 60.0%Crown 35°Girdle: THN-MEDPavilion 39.8°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $4,340 USD|Low: $855 USD|High: $4,470 USD|Avg: $2,096 USD|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 7$975 USD
Retailer 13$1,235 USD
Retailer 6$1,279 USD
Retailer 9$1,299 USD
Retailer 11$1,307 USD
Retailer 12$1,508 USD
Retailer 8$1,967 USD
Retailer 5$2,484 USD
Retailer 10$2,723 USD
Retailer 3$2,754 USD
Retailer 4$2,905 USD
Retailer 2$3,136 USD
Brilliant Earth$4,340 USD

32 data points across 13 retailers

13 retailers$975 USD to $3,136 USD

A
Cheapest Retailer
-
$975 USD
A
Retailer 2
-
$1,235 USD
View
A
Retailer 3
-
$1,279 USD
£1,007 GBP
View
B+
Retailer 4
-
$1,299 USD
View
A
Retailer 5
-
$1,508 USD
View
Retailer 6
-
$1,771 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
$1,967 USD
View
B+
Retailer 8
-
$2,484 USD
£1,956 GBP
View
B+
Retailer 9
-
$2,723 USD
View
B+
Retailer 10
-
$2,754 USD
View
Retailer 11
-
$2,905 USD
View
Price last confirmed 26 days ago
B
Retailer 12
-
$3,136 USD
£2,469 GBP
View
Most Expensive
Brilliant Earth
18181665A · Oct 14
$4,340 USD
View
Price last confirmed 19 days ago
12 more retailers have this diamond
Prices start from $975 USDSave up to $2,161 USD

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
4.51ct Marquise
$975 USD