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Marquise|Lab Grown|IGI

1.20ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG823635201

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG823635201

Diamond specifications and retailer prices

From $409 AUD
As of November 2, 2026
Save $1,687 AUD (81%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $3,284 AUD at Queensmith · As of October 27, 2026
View at Queensmith

About this 1.2ct lab-grown marquise diamond

This 1.2ct lab-grown marquise sits in the classic one-carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG823635201 or 823635201. Listed at 23 retailers as of November 2, 2026, with a 413% 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
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823635201
Dimensions11.15 × 5.69 × 3.44 mm
L/W Ratio1.96
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.15 mm5.69 mm1.20 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823635201
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 60.5%

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: Nov 2
Current: $884 AUD|Low: $391 AUD|High: $2,430 AUD|Avg: $1,179 AUD|-7.9%
Retailer 1
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November 4, 2026
Retailer 5$409 AUD
Retailer 13$456 AUD
Retailer 3$473 AUD
Retailer 9$506 AUD
Retailer 15$506 AUD
Retailer 20$566 AUD
Retailer 18$693 AUD
Retailer 19$729 AUD
Retailer 21$827 AUD
Retailer 16$873 AUD
Retailer 1$884 AUD
Retailer 11$1,101 AUD
Retailer 12$1,241 AUD
Retailer 2$1,556 AUD
Retailer 7$1,627 AUD
Retailer 8$1,627 AUD
Retailer 10$1,697 AUD
Retailer 6$1,800 AUD
Retailer 17$2,027 AUD
Retailer 14$2,096 AUD
Retailer 22$2,100 AUD
Retailer 4$2,420 AUD

41 data points across 22 retailers

23 retailers$409 AUD to $2,096 AUD

A
Cheapest Retailer
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$409 AUD
A
Retailer 2
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$456 AUD
View
Final sale: no returns
A
Retailer 3
-
$473 AUD
View
Retailer 4
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$506 AUD
View
Price last confirmed 12 days ago
A
Retailer 5
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$506 AUD
View
A
Retailer 6
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$566 AUD
View
A
Retailer 7
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$693 AUD
View
A
Retailer 8
-
$729 AUD
View
Retailer 9
-
$827 AUD
View
Price last confirmed 12 days ago
A
Retailer 10
-
$873 AUD
View
A
Retailer 11
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$884 AUD
View
B+
Retailer 12
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$1,101 AUD
View
B+
Retailer 13
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$1,241 AUD
View
B+
Retailer 14
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$1,556 AUD
View
B+
Retailer 15
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$1,627 AUD
View
B+
Retailer 16
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$1,627 AUD
View
B+
Retailer 17
-
$1,697 AUD
View
B
Retailer 18
-
$1,800 AUD
View
B+
Retailer 19
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$2,027 AUD
View
B
Retailer 20
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$2,096 AUD
View
Retailer 21
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$2,100 AUD
View
Price last confirmed 9 days ago
Retailer 22
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$2,420 AUD
View
Price last confirmed 29 days ago
Most Expensive
Queensmith
LG823635201 · Oct 27
$3,284 AUD
£1,810 GBP
View
Price last confirmed 9 days ago
22 more retailers have this diamond
Prices start from $409 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.

A
1.20ct Marquise
$409 AUD