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Cushion|Lab Grown|IGI

5.12ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG756590887

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

Certificate IGI LG756590887

Diamond specifications and retailer prices

From $1,404 SGD
$1,098 USD
As of October 29, 2026
Save $9,731 SGD (87%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $11,135 SGD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 5.12ct lab-grown cushion diamond

This 5.12ct lab-grown cushion sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG756590887 or 756590887. Listed at 10 retailers as of October 29, 2026, with prices from $1,404 to $11,135, a $9,731 spread on the same certified stone. Do Amore Diamonds lists it at $11,135. 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

5.12
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG756590887
Dimensions9.88 × 9.79 × 6.62 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.88 mm9.79 mm5.12 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG756590887
Side View
Table 62.0%Crown 34.7°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 67.6%

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: Oct 29
Current: $2,326 SGD|Low: $1,001 SGD|High: $11,135 SGD|Avg: $2,463 SGD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 7$1,404 SGD
Retailer 5$1,455 SGD
Retailer 3$1,751 SGD
Retailer 6$1,997 SGD
Retailer 4$2,049 SGD
Retailer 8$2,175 SGD
Retailer 1$2,326 SGD
Retailer 2$5,454 SGD

40 data points across 8 retailers

10 retailers$1,404 SGD to $11,135 SGD

A
Cheapest Retailer
-
$1,404 SGD
$1,098 USD
Final sale: no returns
Retailer 2
-
$1,455 SGD
$1,138 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
$1,751 SGD
$1,370 USD
View
B+
Retailer 4
-
$1,997 SGD
$1,562 USD
View
A
Retailer 5
-
$2,049 SGD
$1,603 USD
View
B+
Retailer 6
-
$2,175 SGD
$1,701 USD
View
B+
Retailer 7
-
$2,326 SGD
£1,433 GBP
View
B
Retailer 8
-
$5,454 SGD
£3,359 GBP
View
B
Retailer 9
-
$5,709 SGD
$4,466 USD
View
Most Expensive
B
Do Amore Diamonds
27-5414AD7CC · Oct 29
$11,135 SGD
$8,710 USD
View
9 more retailers have this diamond
Prices start from $1,404 SGDSave up to $9,731 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
5.12ct Cushion
$1,404 SGD