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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 $399 SGD
As of November 4, 2026
Save $1,449 SGD (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,847 SGD 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 $399 to $1,847, a $1,449 spread on the same certified stone. Reve Diamonds lists it at $1,847. 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

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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: Nov 4
Current: $771 SGD|Low: $342 SGD|High: $1,792 SGD|Avg: $827 SGD|+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$356 SGD
Retailer 6$399 SGD
Retailer 4$414 SGD
Retailer 14$442 SGD
Retailer 10$628 SGD
Retailer 11$645 SGD
Retailer 12$724 SGD
Retailer 3$729 SGD
Retailer 1$771 SGD
Retailer 5$861 SGD
Retailer 8$1,146 SGD
Retailer 2$1,422 SGD
Retailer 7$1,770 SGD
Retailer 9$1,775 SGD

42 data points across 14 retailers

17 retailers$399 SGD to $1,847 SGD

Retailer 1
-
$356 SGD
Price last confirmed 16 days ago
A
Retailer 2
-
$399 SGD
View
Final sale: no returns
Retailer 3
-
$414 SGD
View
Price last confirmed 16 days ago
Retailer 4
-
$442 SGD
View
Price last confirmed 15 days ago
Retailer 5
-
$442 SGD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
$628 SGD
View
B+
Retailer 7
-
$645 SGD
View
Retailer 8
-
$724 SGD
View
Price last confirmed 10 days ago
B+
Retailer 9
-
$729 SGD
View
B+
Retailer 10
-
$771 SGD
View
B+
Retailer 11
-
$861 SGD
View
B
Retailer 12
-
$1,146 SGD
View
Retailer 13
-
$1,422 SGD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$1,485 SGD
View
B
Retailer 15
-
$1,770 SGD
View
B
Retailer 16
-
$1,775 SGD
View
Most Expensive
B
Reve Diamonds
4DB39F678 · Nov 6
$1,847 SGD
$1,446 USD
View
16 more retailers have this diamond
Prices start from $399 SGDSave up to $1,449 SGD

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
$399 SGD