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Marquise|Lab Grown|IGI

1.20ct G VS1 Marquise Lab Grown Diamond

ID • G/VS1 • IGI LG500165197

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG500165197

Diamond specifications and retailer prices

From $1,437 AUD
As of November 4, 2026
Save $1,687 AUD (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,594 AUD at Flawless Fine Jewelry · As of November 4, 2026
View at Flawless Fine Jewelry

About this 1.2ct lab-grown marquise diamond

This 1.2ct lab-grown marquise sits in the classic one-carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG500165197 or 500165197. Listed at 16 retailers as of November 4, 2026, with a 117% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500165197
Dimensions11.56 × 5.56 × 3.30 mm
L/W Ratio2.08
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
11.56 mm5.56 mm1.20 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500165197
Side View
Table 61.5%Crown 36.1°Girdle: THN-STKPavilion 40.3°Culet: NoneDepth 59.4%

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: $4,594 AUD|Low: $1,380 AUD|High: $5,728 AUD|Avg: $2,692 AUD
Flawless Fine Jewelry
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
November 5, 2026
Retailer 10$1,437 AUD
Retailer 3$1,564 AUD
Retailer 5$1,608 AUD
Retailer 11$1,643 AUD
Retailer 4$1,667 AUD
Retailer 12$1,667 AUD
Retailer 6$1,914 AUD
Retailer 7$2,380 AUD
Retailer 13$2,663 AUD
Retailer 8$3,067 AUD
Retailer 14$3,124 AUD
Retailer 9$4,343 AUD
Flawless Fine Jewelry$4,594 AUD
Retailer 2$5,638 AUD

45 data points across 14 retailers

16 retailers$1,437 AUD to $3,124 AUD

B+
Cheapest Retailer
-
$1,437 AUD
B
Retailer 2
-
$1,564 AUD
View
B
Retailer 3
-
$1,608 AUD
View
Final sale: no returns
B
Retailer 4
-
$1,643 AUD
View
Retailer 5
-
$1,667 AUD
View
Price last confirmed 20 days ago
B
Retailer 6
-
$1,667 AUD
View
B
Retailer 7
-
$1,914 AUD
View
B
Retailer 8
-
$2,380 AUD
View
B
Retailer 9
-
$2,663 AUD
View
B
Retailer 10
-
$3,067 AUD
View
B
Retailer 11
-
$3,124 AUD
View
Retailer 12
-
$3,484 AUD
View
Price under review
Retailer 13
-
$4,343 AUD
View
Price under review
Most Expensive
Flawless Fine Jewelry
70973F999 · Nov 4
$4,594 AUD
£2,532 GBP
View
Price under review
13 more retailers have this diamond
Prices start from $1,437 AUDSave up to $1,687 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+
1.20ct Marquise
$1,437 AUD