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Cushion|Lab Grown|IGI

1.51ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG519231898

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG519231898

Diamond specifications and retailer prices

From $265 SGD
As of November 6, 2026
Save $1,206 SGD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,471 SGD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG519231898 or 519231898. Listed at 13 retailers as of November 6, 2026, with prices from $265 to $1,471, a $1,206 spread on the same certified stone. Reve Diamonds lists it at $1,471. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle33.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG519231898
Dimensions6.71 × 6.64 × 4.00 mm
L/W Ratio1.01
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
6.71 mm6.64 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG519231898
Side View
Table 62.5%Crown 33°Girdle: MED-THKPavilion 33.6°Culet: NoneDepth 60.2%

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 6
Current: $525 SGD|Low: $265 SGD|High: $1,423 SGD|Avg: $669 SGD|+3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 10$265 SGD
Retailer 8$295 SGD
Retailer 7$397 SGD
Retailer 4$486 SGD
Retailer 1$525 SGD
Retailer 2$587 SGD
Retailer 5$702 SGD
Retailer 9$723 SGD
Retailer 6$1,166 SGD
Retailer 3$1,379 SGD

42 data points across 10 retailers

13 retailers$265 SGD to $1,471 SGD

A
Cheapest Retailer
-
$265 SGD
Final sale: no returns
Retailer 2
-
$295 SGD
View
Price last confirmed 12 days ago
B+
Retailer 3
-
$397 SGD
View
A
Retailer 4
-
$486 SGD
View
A
Retailer 5
-
$525 SGD
View
A
Retailer 6
-
$575 SGD
View
A
Retailer 7
-
$587 SGD
View
A
Retailer 8
-
$702 SGD
View
B+
Retailer 9
-
$723 SGD
View
B+
Retailer 10
-
$1,018 SGD
View
B+
Retailer 11
-
$1,166 SGD
View
B
Retailer 12
-
$1,379 SGD
View
Most Expensive
B
Reve Diamonds
51A9E8EA3 · Nov 6
$1,471 SGD
$1,148 USD
View
12 more retailers have this diamond
Prices start from $265 SGDSave up to $1,206 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
$265 SGD