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Marquise|Lab Grown|IGI

3.51ct F VS2 Marquise Lab Grown Diamond

EX • F/VS2 • IGI LG843641551

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843641551

Diamond specifications and retailer prices

From $1,017 AUD
£561 GBP
As of October 27, 2026
Save $3,792 AUD (79%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,809 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG843641551 or 843641551. Listed at 13 retailers as of October 27, 2026, with prices from $1,017 to $4,809, a $3,792 spread on the same certified stone. Brilliant Earth lists it at $4,809. 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
F
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.3°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843641551
Dimensions15.66 × 7.75 × 4.87 mm
L/W Ratio2.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.66 mm7.75 mm3.51 ctF / VS2
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG843641551
Side View
Table 59.0%Crown 35.3°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 62.8%

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: $4,809 AUD|Low: $765 AUD|High: $8,033 AUD|Avg: $2,522 AUD|-40.1%
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
Retailer 14
October 31, 2026
Retailer 3$765 AUD
Retailer 9$1,017 AUD
Retailer 8$1,049 AUD
Retailer 6$1,134 AUD
Retailer 11$1,266 AUD
Retailer 10$1,398 AUD
Retailer 7$1,879 AUD
Retailer 2$1,916 AUD
Retailer 4$2,765 AUD
Retailer 14$2,919 AUD
Retailer 13$2,973 AUD
Retailer 12$3,117 AUD
Retailer 5$3,860 AUD
Brilliant Earth$4,809 AUD

12 data points across 14 retailers

13 retailers$1,017 AUD to $4,809 AUD

A
Cheapest Retailer
-
$1,017 AUD
£561 GBP
Retailer 2
-
$1,049 AUD
$735 USD
View
Price last confirmed 5 days ago
B+
Retailer 3
-
$1,134 AUD
$795 USD
View
A
Retailer 4
-
$1,266 AUD
€845 EUR
View
A
Retailer 5
-
$1,398 AUD
£772 GBP
View
A
Retailer 6
-
$1,879 AUD
$1,317 USD
View
A
Retailer 7
-
$1,916 AUD
$1,343 USD
View
B+
Retailer 8
-
$2,765 AUD
$1,938 USD
View
B+
Retailer 9
-
$2,919 AUD
$2,046 USD
View
Retailer 10
-
$2,973 AUD
$2,084 USD
View
Price last confirmed 8 days ago
Retailer 11
-
$3,117 AUD
£1,720 GBP
View
Price last confirmed 8 days ago
B
Retailer 12
-
$3,860 AUD
$2,705 USD
View
Most Expensive
B
Brilliant Earth
22183942A · Oct 31
$4,809 AUD
$3,370 USD
View
12 more retailers have this diamond
Prices start from $1,017 AUDSave up to $3,792 AUD

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
$1,017 AUD