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Cushion|Lab Grown|IGI

1.51ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG726545903

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG726545903

Diamond specifications and retailer prices

From $333 SGD
As of November 6, 2026
Save $1,833 SGD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,166 SGD at Brilliant Earth · As of November 6, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG726545903 or 726545903. Listed at 12 retailers as of November 6, 2026, with prices from $333 to $2,166, a $1,833 spread on the same certified stone. Brilliant Earth lists it at $2,166. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle28.9°
Pavilion angle30.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG726545903
Dimensions8.56 × 5.76 × 3.49 mm
L/W Ratio1.49
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.56 mm5.76 mm1.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG726545903
Side View
Table 60.0%Crown 28.9°Girdle: MED-THKPavilion 30.9°Culet: LargeDepth 60.6%

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: $2,166 SGD|Low: $333 SGD|High: $2,166 SGD|Avg: $805 SGD|+49.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 10$333 SGD
Retailer 8$370 SGD
Retailer 6$500 SGD
Retailer 5$614 SGD
Retailer 4$692 SGD
Retailer 9$789 SGD
Retailer 7$1,141 SGD
Retailer 2$1,337 SGD
Retailer 3$1,475 SGD
Brilliant Earth$2,166 SGD

43 data points across 10 retailers

12 retailers$333 SGD to $2,166 SGD

A
Cheapest Retailer
-
$333 SGD
Final sale: no returns
A
Retailer 2
-
$370 SGD
View
B+
Retailer 3
-
$500 SGD
View
A
Retailer 4
-
$597 SGD
View
A
Retailer 5
-
$614 SGD
View
A
Retailer 6
-
$692 SGD
View
B+
Retailer 7
-
$789 SGD
View
Retailer 8
-
$1,141 SGD
View
Price last confirmed 17 days ago
B
Retailer 9
-
$1,257 SGD
View
B
Retailer 10
-
$1,337 SGD
View
B
Retailer 11
-
$1,475 SGD
View
Most Expensive
B
Brilliant Earth
20664776A · Nov 6
$2,166 SGD
$1,690 USD
View
11 more retailers have this diamond
Prices start from $333 SGDSave up to $1,833 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
$333 SGD