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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 €279 EUR
$312 USD
As of October 30, 2026
Save €1,015 EUR (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €1,295 EUR at Reve Diamonds · As of October 30, 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 October 30, 2026, with prices from €279 to €1,295, a €1,015 spread on the same certified stone. Reve Diamonds lists it at €1,295. 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
Color
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €1,244 EUR|Low: €240 EUR|High: €1,256 EUR|Avg: €570 EUR
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
October 31, 2026
Retailer 13€250 EUR
Retailer 6€279 EUR
Retailer 4€290 EUR
Retailer 14€310 EUR
Retailer 8€440 EUR
Retailer 9€452 EUR
Retailer 10€508 EUR
Retailer 3€511 EUR
Retailer 7€542 EUR
Retailer 5€603 EUR
Retailer 12€791 EUR
Retailer 2€996 EUR
Retailer 1€1,244 EUR
Retailer 11€1,248 EUR

39 data points across 14 retailers

17 retailers€279 EUR to €1,295 EUR

Retailer 1
-
€250 EUR
$279 USD
Price last confirmed 10 days ago
A
Retailer 2
-
€279 EUR
$312 USD
View
Final sale: no returns
Retailer 3
-
€290 EUR
$324 USD
View
Price last confirmed 11 days ago
Retailer 4
-
€310 EUR
$346 USD
View
Price last confirmed 10 days ago
Retailer 5
-
€310 EUR
$346 USD
View
Price last confirmed 15 days ago
B+
Retailer 6
-
€440 EUR
$492 USD
View
B+
Retailer 7
-
€452 EUR
$505 USD
View
B+
Retailer 8
-
€508 EUR
View
B+
Retailer 9
-
€511 EUR
$571 USD
View
B+
Retailer 10
-
€542 EUR
£476 GBP
View
B+
Retailer 11
-
€603 EUR
$674 USD
View
B
Retailer 12
-
€791 EUR
$884 USD
View
Retailer 13
-
€996 EUR
$1,113 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
€1,041 EUR
$1,163 USD
View
B
Retailer 15
-
€1,244 EUR
$1,390 USD
View
B
Retailer 16
-
€1,248 EUR
£1,098 GBP
View
Most Expensive
B
Reve Diamonds
4DB39F678 · Oct 30
€1,295 EUR
$1,446 USD
View
16 more retailers have this diamond
Prices start from €279 EURSave up to €1,015 EUR

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
€279 EUR