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Marquise|Lab Grown|IGI

1.31ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG524239249

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG524239249

Diamond specifications and retailer prices

From $446 AUD
As of November 4, 2026
Save $1,620 AUD (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,066 AUD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.31ct lab-grown marquise diamond

This 1.31ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG524239249 or 524239249. Listed at 17 retailers as of November 4, 2026, with prices from $446 to $2,066, a $1,620 spread on the same certified stone. Reve Diamonds lists it at $2,066. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.31
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG524239249
Dimensions11.15 × 5.86 × 3.56 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
11.15 mm5.86 mm1.31 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG524239249
Side View
Table 59.0%Crown 34.1°Girdle: MED-STKPavilion 39.7°Culet: NoneDepth 60.8%

Caratlytics Score

How it works →
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: Nov 4
Current: $863 AUD|Low: $383 AUD|High: $2,004 AUD|Avg: $925 AUD|+2.2%
Retailer 1
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
November 6, 2026
Retailer 13$399 AUD
Retailer 6$446 AUD
Retailer 4$463 AUD
Retailer 14$494 AUD
Retailer 10$703 AUD
Retailer 11$721 AUD
Retailer 12$810 AUD
Retailer 3$816 AUD
Retailer 1$863 AUD
Retailer 5$963 AUD
Retailer 8$1,281 AUD
Retailer 2$1,590 AUD
Retailer 7$1,980 AUD
Retailer 9$1,986 AUD

42 data points across 14 retailers

17 retailers$446 AUD to $2,066 AUD

Retailer 1
-
$399 AUD
Price last confirmed 16 days ago
A
Retailer 2
-
$446 AUD
View
Final sale: no returns
Retailer 3
-
$463 AUD
View
Price last confirmed 16 days ago
Retailer 4
-
$494 AUD
View
Price last confirmed 15 days ago
Retailer 5
-
$494 AUD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
$703 AUD
View
B+
Retailer 7
-
$721 AUD
View
Retailer 8
-
$810 AUD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$816 AUD
View
B+
Retailer 10
-
$863 AUD
View
B+
Retailer 11
-
$963 AUD
View
B
Retailer 12
-
$1,281 AUD
View
Retailer 13
-
$1,590 AUD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$1,661 AUD
View
B
Retailer 15
-
$1,980 AUD
View
B
Retailer 16
-
$1,986 AUD
View
Most Expensive
B
Reve Diamonds
4DB39F678 · Nov 6
$2,066 AUD
$1,446 USD
View
16 more retailers have this diamond
Prices start from $446 AUDSave up to $1,620 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
1.31ct Marquise
$446 AUD