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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 €278 EUR
As of November 4, 2026
Save €1,011 EUR (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €1,289 EUR 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 €278 to €1,289, a €1,011 spread on the same certified stone. Reve Diamonds lists it at €1,289. 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: €538 EUR|Low: €239 EUR|High: €1,250 EUR|Avg: €577 EUR|+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€249 EUR
Retailer 6€278 EUR
Retailer 4€289 EUR
Retailer 14€308 EUR
Retailer 10€438 EUR
Retailer 11€450 EUR
Retailer 12€505 EUR
Retailer 3€509 EUR
Retailer 1€538 EUR
Retailer 5€601 EUR
Retailer 8€799 EUR
Retailer 2€992 EUR
Retailer 7€1,235 EUR
Retailer 9€1,238 EUR

42 data points across 14 retailers

17 retailers€278 EUR to €1,289 EUR

Retailer 1
-
€249 EUR
Price last confirmed 16 days ago
A
Retailer 2
-
€278 EUR
View
Final sale: no returns
Retailer 3
-
€289 EUR
View
Price last confirmed 16 days ago
Retailer 4
-
€308 EUR
View
Price last confirmed 15 days ago
Retailer 5
-
€308 EUR
View
Price last confirmed 21 days ago
B+
Retailer 6
-
€438 EUR
View
B+
Retailer 7
-
€450 EUR
View
Retailer 8
-
€505 EUR
View
Price last confirmed 10 days ago
B+
Retailer 9
-
€509 EUR
View
B+
Retailer 10
-
€538 EUR
View
B+
Retailer 11
-
€601 EUR
View
B
Retailer 12
-
€799 EUR
View
Retailer 13
-
€992 EUR
View
Price last confirmed 15 days ago
B
Retailer 14
-
€1,036 EUR
View
B
Retailer 15
-
€1,235 EUR
View
B
Retailer 16
-
€1,238 EUR
View
Most Expensive
B
Reve Diamonds
4DB39F678 · Nov 6
€1,289 EUR
$1,446 USD
View
16 more retailers have this diamond
Prices start from €278 EURSave up to €1,011 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
€278 EUR