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Marquise|Lab Grown|IGI

1.20ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG754594815

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754594815

Diamond specifications and retailer prices

From $671 NZD
As of November 4, 2026
Save $2,923 NZD (81%) vs most expensive(unlock to see where)
30 retailers carry this diamond
Most expensive: $3,593 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 LG754594815 or 754594815. Listed at 30 retailers as of November 4, 2026, with prices from $671 to $3,593, a $2,923 spread on the same certified stone. Brilliant Earth lists it at $3,593. 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 angle36°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754594815
Dimensions11.03 × 5.46 × 3.45 mm
L/W Ratio2.02
Girdle conditionFaceted
Culet sizePointed
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
11.03 mm5.46 mm1.20 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754594815
Side View
Table 58.0%Crown 36°Girdle: STK-THKPavilion 40°Culet: NoneDepth 63.2%

Caratlytics Score

How it works →
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 4
Current: $3,593 NZD|Low: $671 NZD|High: $4,607 NZD|Avg: $2,195 NZD|-22.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
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Retailer 23
November 5, 2026
Retailer 21$671 NZD
Retailer 16$811 NZD
Retailer 19$865 NZD
Retailer 15$970 NZD
Retailer 18$970 NZD
Retailer 3$1,050 NZD
Retailer 13$1,309 NZD
Retailer 14$1,372 NZD
Retailer 2$1,402 NZD
Retailer 11$1,553 NZD
Retailer 9$1,670 NZD
Retailer 7$1,690 NZD
Retailer 20$1,823 NZD
Retailer 23$2,177 NZD
Retailer 22$2,386 NZD
Retailer 8$2,462 NZD
Retailer 5$2,492 NZD
Retailer 12$2,713 NZD
Retailer 6$2,836 NZD
Retailer 4$2,898 NZD
Retailer 17$2,965 NZD
Retailer 10$3,179 NZD
Brilliant Earth$3,593 NZD

30 data points across 23 retailers

30 retailers$671 NZD to $3,593 NZD

A
Cheapest Retailer
-
$671 NZD
Final sale: no returns
Retailer 2
-
$811 NZD
View
Price last confirmed 28 days ago
Retailer 3
-
$811 NZD
View
Price last confirmed 36 days ago
A
Retailer 4
-
$865 NZD
View
Retailer 5
-
$909 NZD
View
Price last confirmed 37 days ago
A
Retailer 6
-
$970 NZD
View
Retailer 7
-
$970 NZD
View
Price last confirmed 28 days ago
Retailer 8
-
$970 NZD
View
Price last confirmed 26 days ago
Retailer 9
-
$994 NZD
View
Price last confirmed 37 days ago
A
Retailer 10
-
$1,050 NZD
View
A
Retailer 11
-
$1,309 NZD
View
B+
Retailer 12
-
$1,372 NZD
View
B+
Retailer 13
-
$1,402 NZD
View
Retailer 14
-
$1,553 NZD
View
Price last confirmed 7 days ago
Retailer 15
-
$1,589 NZD
View
Price last confirmed 21 days ago
B+
Retailer 16
-
$1,670 NZD
View
B+
Retailer 17
-
$1,690 NZD
View
B+
Retailer 18
-
$1,823 NZD
View
B+
Retailer 19
-
$2,177 NZD
View
B+
Retailer 20
-
$2,386 NZD
View
B+
Retailer 21
-
$2,462 NZD
View
B+
Retailer 22
-
$2,492 NZD
View
Retailer 23
-
$2,713 NZD
View
Price last confirmed 8 days ago
B
Retailer 24
-
$2,836 NZD
View
B
Retailer 25
-
$2,898 NZD
View
B
Retailer 26
-
$2,965 NZD
View
Retailer 27
-
$3,115 NZD
View
Price last confirmed 26 days ago
B
Retailer 28
-
$3,179 NZD
View
Retailer 29
-
$3,236 NZD
View
Price last confirmed 36 days ago
Most Expensive
B
Brilliant Earth
17981286A · Nov 4
$3,593 NZD
$2,020 USD
View
29 more retailers have this diamond
Prices start from $671 NZDSave up to $2,923 NZD

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
$671 NZD