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Cushion|Lab Grown|IGI

1.51ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG728533556

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

Certificate IGI LG728533556

Diamond specifications and retailer prices

From $661 SGD
As of November 4, 2026
Save $3,160 SGD (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,821 SGD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.51ct lab-grown cushion diamond

This 1.51ct 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 LG728533556 or 728533556. Listed at 20 retailers as of November 4, 2026, with prices from $661 to $3,821, a $3,160 spread on the same certified stone. Brilliant Earth lists it at $3,821. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle33.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG728533556
Dimensions6.54 × 6.41 × 4.14 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
6.54 mm6.41 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG728533556
Side View
Table 59.0%Crown 34°Girdle: MED-THKPavilion 33.6°Culet: NoneDepth 64.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $3,821 SGD|Low: $661 SGD|High: $5,610 SGD|Avg: $2,038 SGD|-31.9%
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
Retailer 13
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Retailer 15
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Retailer 17
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Retailer 19
November 5, 2026
Retailer 17$661 SGD
Retailer 9$803 SGD
Retailer 8$926 SGD
Retailer 19$981 SGD
Retailer 4$1,110 SGD
Retailer 10$1,182 SGD
Retailer 12$1,200 SGD
Retailer 15$1,261 SGD
Retailer 16$1,362 SGD
Retailer 14$1,711 SGD
Retailer 13$1,858 SGD
Retailer 7$1,870 SGD
Retailer 5$2,262 SGD
Retailer 18$2,391 SGD
Retailer 3$2,593 SGD
Retailer 11$2,648 SGD
Retailer 2$2,681 SGD
Retailer 6$3,096 SGD
Brilliant Earth$3,821 SGD

37 data points across 19 retailers

20 retailers$661 SGD to $3,821 SGD

A
Cheapest Retailer
-
$661 SGD
Final sale: no returns
Retailer 2
-
$803 SGD
View
Price last confirmed 20 days ago
A
Retailer 3
-
$926 SGD
View
A
Retailer 4
-
$981 SGD
View
A
Retailer 5
-
$1,110 SGD
View
A
Retailer 6
-
$1,182 SGD
View
A
Retailer 7
-
$1,200 SGD
View
A
Retailer 8
-
$1,261 SGD
View
A
Retailer 9
-
$1,362 SGD
View
A
Retailer 10
-
$1,711 SGD
View
B+
Retailer 11
-
$1,858 SGD
View
B+
Retailer 12
-
$1,870 SGD
View
B+
Retailer 13
-
$2,262 SGD
View
B+
Retailer 14
-
$2,391 SGD
View
B+
Retailer 15
-
$2,593 SGD
View
Retailer 16
-
$2,648 SGD
View
Price last confirmed 25 days ago
B+
Retailer 17
-
$2,681 SGD
View
B
Retailer 18
-
$3,096 SGD
View
Retailer 19
-
$3,634 SGD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
15509665A · Nov 4
$3,821 SGD
$2,990 USD
View
19 more retailers have this diamond
Prices start from $661 SGDSave up to $3,160 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
1.51ct Cushion
$661 SGD