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Cushion|Lab Grown|IGI

1.91ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG628447820

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG628447820

Diamond specifications and retailer prices

From $643 SGD
$503 USD
As of October 30, 2026
Save $4,292 SGD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,935 SGD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.91ct lab-grown cushion diamond

This 1.91ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG628447820 or 628447820. Listed at 13 retailers as of October 30, 2026, with prices from $643 to $4,935, a $4,292 spread on the same certified stone. Brilliant Earth lists it at $4,935. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG628447820
Dimensions7.46 × 7.28 × 4.69 mm
L/W Ratio1.02
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
7.46 mm7.28 mm1.91 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG628447820
Side View
Table 63.0%Crown 33.7°Girdle: STK-VTKPavilion 39.7°Culet: NoneDepth 64.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $4,935 SGD|Low: $623 SGD|High: $5,970 SGD|Avg: $2,659 SGD|-17.3%
Brilliant Earth
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
October 30, 2026
Retailer 5$643 SGD
Retailer 8$872 SGD
Retailer 14$946 SGD
Retailer 10$1,042 SGD
Retailer 7$1,138 SGD
Retailer 3$1,610 SGD
Retailer 2$1,693 SGD
Retailer 12$1,929 SGD
Retailer 11$2,676 SGD
Retailer 13$4,046 SGD
Retailer 6$4,111 SGD
Retailer 4$4,351 SGD
Retailer 9$4,717 SGD
Brilliant Earth$4,935 SGD

27 data points across 14 retailers

13 retailers$643 SGD to $4,935 SGD

A
Cheapest Retailer
-
$643 SGD
$503 USD
Final sale: no returns
A
Retailer 2
-
$872 SGD
$682 USD
View
A
Retailer 3
-
$946 SGD
$740 USD
View
A
Retailer 4
-
$1,042 SGD
$815 USD
View
A
Retailer 5
-
$1,138 SGD
€848 EUR
View
A
Retailer 6
-
$1,610 SGD
$1,259 USD
View
A
Retailer 7
-
$1,693 SGD
A$2,038 AUD
View
A
Retailer 8
-
$1,929 SGD
$1,509 USD
View
B+
Retailer 9
-
$2,676 SGD
£1,648 GBP
View
Retailer 10
-
$4,046 SGD
$3,165 USD
View
Price last confirmed 10 days ago
Retailer 11
-
$4,351 SGD
A$5,236 AUD
View
Price last confirmed 23 days ago
B
Retailer 12
-
$4,717 SGD
$3,690 USD
View
Most Expensive
B
Brilliant Earth
18070216Y · Oct 30
$4,935 SGD
$3,860 USD
View
12 more retailers have this diamond
Prices start from $643 SGDSave up to $4,292 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
1.91ct Cushion
$643 SGD