CaratHunter
Plans
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 $332 SGD
As of November 4, 2026
Save $2,428 SGD (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,760 SGD 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 $332 to $2,760, a $2,428 spread on the same certified stone. Brilliant Earth lists it at $2,760. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,449 SGD|Low: $332 SGD|High: $2,156 SGD|Avg: $1,034 SGD|-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 15$332 SGD
Retailer 5$373 SGD
Retailer 6$414 SGD
Retailer 13$423 SGD
Retailer 18$556 SGD
Retailer 12$613 SGD
Retailer 8$719 SGD
Retailer 2$782 SGD
Retailer 9$837 SGD
Retailer 4$988 SGD
Retailer 3$1,015 SGD
Retailer 17$1,265 SGD
Retailer 16$1,324 SGD
Retailer 14$1,389 SGD
Retailer 1$1,449 SGD
Retailer 11$1,647 SGD
Retailer 7$2,073 SGD
Retailer 10$2,156 SGD

9 data points across 18 retailers

19 retailers$332 SGD to $2,760 SGD

A
Cheapest Retailer
-
$332 SGD
A
Retailer 2
-
$373 SGD
View
Final sale: no returns
A
Retailer 3
-
$414 SGD
View
A
Retailer 4
-
$423 SGD
View
A
Retailer 5
-
$556 SGD
View
A
Retailer 6
-
$613 SGD
View
A
Retailer 7
-
$719 SGD
View
A
Retailer 8
-
$782 SGD
View
A
Retailer 9
-
$837 SGD
View
A
Retailer 10
-
$988 SGD
View
B+
Retailer 11
-
$1,015 SGD
View
B+
Retailer 12
-
$1,265 SGD
View
B+
Retailer 13
-
$1,324 SGD
View
B+
Retailer 14
-
$1,389 SGD
View
B+
Retailer 15
-
$1,449 SGD
View
B+
Retailer 16
-
$1,647 SGD
View
B
Retailer 17
-
$2,073 SGD
View
B
Retailer 18
-
$2,156 SGD
View
Most Expensive
B
Brilliant Earth
22406151A · Nov 4
$2,760 SGD
$2,160 USD
View
18 more retailers have this diamond
Prices start from $332 SGDSave up to $2,428 SGD

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
$332 SGD