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Marquise|Lab Grown|IGI

1.21ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG843637937

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843637937

Diamond specifications and retailer prices

From $463 NZD
As of November 4, 2026
Save $3,380 NZD (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,842 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.21ct lab-grown marquise diamond

This 1.21ct 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 LG843637937 or 843637937. Listed at 19 retailers as of November 4, 2026, with prices from $463 to $3,842, a $3,380 spread on the same certified stone. Brilliant Earth lists it at $3,842. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.9°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843637937
Dimensions11.35 × 5.33 × 3.33 mm
L/W Ratio2.13
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.35 mm5.33 mm1.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843637937
Side View
Table 60.0%Crown 38.9°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 62.5%

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: $583 NZD|Low: $463 NZD|High: $3,001 NZD|Avg: $1,439 NZD|-6.0%
Retailer 1
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 5, 2026
Retailer 3$463 NZD
Retailer 12$516 NZD
Retailer 14$571 NZD
Retailer 1$583 NZD
Retailer 6$774 NZD
Retailer 18$854 NZD
Retailer 8$1,002 NZD
Retailer 15$1,085 NZD
Retailer 9$1,165 NZD
Retailer 11$1,373 NZD
Retailer 7$1,412 NZD
Retailer 5$1,761 NZD
Retailer 4$1,843 NZD
Retailer 2$1,934 NZD
Retailer 16$2,017 NZD
Retailer 17$2,293 NZD
Retailer 13$2,875 NZD
Retailer 10$3,001 NZD

9 data points across 18 retailers

19 retailers$463 NZD to $3,842 NZD

A
Cheapest Retailer
-
$463 NZD
A
Retailer 2
-
$516 NZD
View
Final sale: no returns
A
Retailer 3
-
$571 NZD
View
A
Retailer 4
-
$583 NZD
View
A
Retailer 5
-
$774 NZD
View
A
Retailer 6
-
$854 NZD
View
A
Retailer 7
-
$1,002 NZD
View
A
Retailer 8
-
$1,085 NZD
View
A
Retailer 9
-
$1,165 NZD
View
A
Retailer 10
-
$1,373 NZD
View
B+
Retailer 11
-
$1,412 NZD
View
B+
Retailer 12
-
$1,761 NZD
View
B+
Retailer 13
-
$1,843 NZD
View
B+
Retailer 14
-
$1,934 NZD
View
B+
Retailer 15
-
$2,017 NZD
View
B+
Retailer 16
-
$2,293 NZD
View
B
Retailer 17
-
$2,875 NZD
View
B
Retailer 18
-
$3,001 NZD
View
Most Expensive
B
Brilliant Earth
22406151A · Nov 4
$3,842 NZD
$2,160 USD
View
18 more retailers have this diamond
Prices start from $463 NZDSave up to $3,380 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
1.21ct Marquise
$463 NZD