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Marquise|Lab Grown|IGI

1.33ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG787660815

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG787660815

Diamond specifications and retailer prices

From €378 EUR
$424 USD
As of November 1, 2026
Save €369 EUR (49%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: €1,027 EUR at MOH London · As of October 18, 2026
View at MOH London

About this 1.33ct lab-grown marquise diamond

This 1.33ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG787660815 or 787660815. Listed at 6 retailers as of October 31, 2026, with a 98% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.33
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787660815
Dimensions11.07 × 5.64 × 3.69 mm
L/W Ratio1.96
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.07 mm5.64 mm1.33 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787660815
Side View
Table 59.0%Crown 37.7°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 65.4%

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 1
Current: €1,027 EUR|Low: €356 EUR|High: €1,029 EUR|Avg: €577 EUR|+1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 3€378 EUR
Retailer 2€398 EUR
Retailer 6€438 EUR
Retailer 4€507 EUR
Retailer 5€747 EUR
MOH London€1,027 EUR

30 data points across 6 retailers

6 retailers€378 EUR to €747 EUR

A
Cheapest Retailer
-
€378 EUR
$424 USD
B+
Retailer 2
-
€398 EUR
£351 GBP
View
B+
Retailer 3
-
€438 EUR
$491 USD
View
B+
Retailer 4
-
€507 EUR
$569 USD
View
B
Retailer 5
-
€747 EUR
$838 USD
View
Most Expensive
MOH London
LG787660815 · Oct 15
€1,027 EUR
£907 GBP
View
Price last confirmed 15 days ago
5 more retailers have this diamond
Prices start from €378 EURSave up to €369 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
1.33ct Marquise
€378 EUR