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Marquise|Lab Grown|IGI

4.01ct G SI1 Marquise Lab Grown Diamond

ID • G/SI1 • IGI LG678527855

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG678527855

Diamond specifications and retailer prices

From €427 EUR
$477 USD
As of October 30, 2026
Save €1,802 EUR (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €2,229 EUR at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 4.01ct lab-grown marquise diamond

This 4.01ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG678527855 or 678527855. Listed at 14 retailers as of October 30, 2026, with prices from €427 to €2,229, a €1,802 spread on the same certified stone. Rare Carat lists it at €2,229. 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

4.01
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.7°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678527855
Dimensions16.35 × 8.19 × 5.17 mm
L/W Ratio2.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.35 mm8.19 mm4.01 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678527855
Side View
Table 59.0%Crown 41.7°Girdle: MED-STKPavilion 34.3°Culet: NoneDepth 63.1%

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: Oct 30
Current: €2,229 EUR|Low: €427 EUR|High: €5,093 EUR|Avg: €1,492 EUR
Rare Carat
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
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 12€427 EUR
Retailer 6€479 EUR
Retailer 2€501 EUR
Retailer 13€530 EUR
Retailer 17€584 EUR
Retailer 14€658 EUR
Retailer 5€827 EUR
Retailer 16€833 EUR
Retailer 10€880 EUR
Retailer 7€1,158 EUR
Retailer 4€1,199 EUR
Retailer 11€1,424 EUR
Retailer 3€1,703 EUR
Retailer 15€1,958 EUR
Rare Carat€2,229 EUR
Retailer 9€3,973 EUR
Retailer 8€5,093 EUR

5 data points across 17 retailers

14 retailers€427 EUR to €2,229 EUR

A
Cheapest Retailer
-
€427 EUR
$477 USD
A
Retailer 2
-
€479 EUR
$535 USD
View
A
Retailer 3
-
€501 EUR
£441 GBP
View
A
Retailer 4
-
€530 EUR
$592 USD
View
A
Retailer 5
-
€584 EUR
HK$5,100 HKD
View
A
Retailer 6
-
€658 EUR
$735 USD
View
B+
Retailer 7
-
€827 EUR
$924 USD
View
A
Retailer 8
-
€833 EUR
$931 USD
View
A
Retailer 9
-
€880 EUR
£774 GBP
View
B+
Retailer 10
-
€1,199 EUR
$1,339 USD
View
B+
Retailer 11
-
€1,424 EUR
$1,591 USD
View
B
Retailer 12
-
€1,703 EUR
$1,903 USD
View
B
Retailer 13
-
€1,958 EUR
£1,722 GBP
View
Most Expensive
B
Rare Carat
KI8555278KF678 · Nov 1
€2,229 EUR
$2,490 USD
View
13 more retailers have this diamond
Prices start from €427 EURSave up to €1,802 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
4.01ct Marquise
€427 EUR