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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 $857 AUD
As of November 4, 2026
Save $810 AUD (49%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,830 AUD at NZ Jewellers · As of November 6, 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 November 4, 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
Colour
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: Nov 4
Current: $1,667 AUD|Low: $833 AUD|High: $4,725 AUD|Avg: $1,837 AUD|+1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 3$857 AUD
Retailer 5$867 AUD
Retailer 6$1,076 AUD
Retailer 8$1,257 AUD
Retailer 7$1,650 AUD
Retailer 1$1,667 AUD
Retailer 4$2,670 AUD
Retailer 2$4,668 AUD

43 data points across 8 retailers

11 retailers$857 AUD to $1,667 AUD

B+
Cheapest Retailer
-
$857 AUD
B
Retailer 2
-
$867 AUD
View
B
Retailer 3
-
$971 AUD
View
Retailer 4
-
$1,076 AUD
View
Price last confirmed 21 days ago
B
Retailer 5
-
$1,076 AUD
View
B
Retailer 6
-
$1,257 AUD
View
B
Retailer 7
-
$1,650 AUD
View
B
Retailer 8
-
$1,667 AUD
View
Retailer 9
-
$2,670 AUD
View
Price under review
Most Expensive
NZ Jewellers
4b1eb1ca-f44e-4dfd-8738-cdaf3e787deb · Nov 6
$2,830 AUD
$1,981 USD
View
Price under review
9 more retailers have this diamond
Prices start from $857 AUDSave up to $810 AUD

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
$857 AUD