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Marquise|Lab Grown|IGI

1.01ct G SI1 Marquise Lab Grown Diamond

ID • G/SI1 • IGI LG512205206

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG512205206

Diamond specifications and retailer prices

From €537 EUR
$600 USD
As of October 31, 2026
Save €509 EUR (49%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €1,773 EUR at NZ Jewellers · As of October 31, 2026
View at NZ Jewellers

About this 1.01ct lab-grown marquise diamond

This 1.01ct lab-grown marquise sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512205206 or 512205206. Listed at 11 retailers as of October 31, 2026, with a 95% 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

1.01
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.7°
Pavilion angle37.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512205206
Dimensions9.41 × 5.26 × 3.34 mm
L/W Ratio1.79
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
9.41 mm5.26 mm1.01 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512205206
Side View
Table 63.0%Crown 40.7°Girdle: STK-THKPavilion 37.2°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: €1,046 EUR|Low: €522 EUR|High: €2,961 EUR|Avg: €1,142 EUR|+1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 3€537 EUR
Retailer 5€543 EUR
Retailer 6€674 EUR
Retailer 8€788 EUR
Retailer 7€1,034 EUR
Retailer 1€1,046 EUR
Retailer 4€1,673 EUR
Retailer 2€2,926 EUR

41 data points across 8 retailers

11 retailers€537 EUR to €1,046 EUR

B+
Cheapest Retailer
-
€537 EUR
$600 USD
B
Retailer 2
-
€543 EUR
$607 USD
View
B
Retailer 3
-
€609 EUR
$680 USD
View
Retailer 4
-
€674 EUR
$753 USD
View
Price last confirmed 16 days ago
B
Retailer 5
-
€674 EUR
$753 USD
View
B
Retailer 6
-
€788 EUR
$880 USD
View
B
Retailer 7
-
€1,034 EUR
$1,155 USD
View
B
Retailer 8
-
€1,046 EUR
£921 GBP
View
Retailer 9
-
€1,673 EUR
$1,869 USD
View
Price under review
Most Expensive
NZ Jewellers
4b1eb1ca-f44e-4dfd-8738-cdaf3e787deb · Oct 31
€1,773 EUR
$1,981 USD
View
Price under review
9 more retailers have this diamond
Prices start from €537 EURSave up to €509 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.

B+
1.01ct Marquise
€537 EUR