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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 $477 USD
As of October 30, 2026
Save $2,013 USD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,490 USD 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 $477 to $2,490, a $2,013 spread on the same certified stone. Rare Carat lists it at $2,490. 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: $2,490 USD|Low: $477 USD|High: $5,690 USD|Avg: $1,667 USD
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$477 USD
Retailer 6$535 USD
Retailer 2$560 USD
Retailer 13$592 USD
Retailer 17$653 USD
Retailer 14$735 USD
Retailer 5$924 USD
Retailer 16$931 USD
Retailer 10$983 USD
Retailer 7$1,294 USD
Retailer 4$1,339 USD
Retailer 11$1,591 USD
Retailer 3$1,903 USD
Retailer 15$2,187 USD
Rare Carat$2,490 USD
Retailer 9$4,438 USD
Retailer 8$5,690 USD

5 data points across 17 retailers

14 retailers$477 USD to $2,490 USD

A
Cheapest Retailer
-
$477 USD
A
Retailer 2
-
$535 USD
View
A
Retailer 3
-
$560 USD
£441 GBP
View
A
Retailer 4
-
$592 USD
View
A
Retailer 5
-
$653 USD
HK$5,100 HKD
View
A
Retailer 6
-
$735 USD
View
B+
Retailer 7
-
$924 USD
View
A
Retailer 8
-
$931 USD
View
A
Retailer 9
-
$983 USD
£774 GBP
View
B+
Retailer 10
-
$1,339 USD
View
B+
Retailer 11
-
$1,591 USD
View
B
Retailer 12
-
$1,903 USD
View
B
Retailer 13
-
$2,187 USD
£1,722 GBP
View
Most Expensive
B
Rare Carat
KI8555278KF678 · Nov 1
$2,490 USD
View
13 more retailers have this diamond
Prices start from $477 USDSave up to $2,013 USD

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
$477 USD