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Cushion|Lab Grown|IGI

1.58ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG532249567

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG532249567

Diamond specifications and retailer prices

From $277 SGD
$216 USD
As of October 28, 2026
Save $1,364 SGD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,641 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.58ct lab-grown cushion diamond

This 1.58ct 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 LG532249567 or 532249567. Listed at 13 retailers as of October 28, 2026, with prices from $277 to $1,641, a $1,364 spread on the same certified stone. Brilliant Earth lists it at $1,641. 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

1.58
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle33.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG532249567
Dimensions6.44 × 6.43 × 4.37 mm
L/W Ratio1.00
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
6.44 mm6.43 mm1.58 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG532249567
Side View
Table 62.0%Crown 37.5°Girdle: MED-THKPavilion 33.3°Culet: NoneDepth 68.0%

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 28
Current: $1,641 SGD|Low: $277 SGD|High: $1,756 SGD|Avg: $742 SGD|-6.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 9$277 SGD
Retailer 7$306 SGD
Retailer 4$413 SGD
Retailer 3$506 SGD
Retailer 2$557 SGD
Retailer 10$615 SGD
Retailer 8$737 SGD
Retailer 6$778 SGD
Retailer 5$1,442 SGD
Brilliant Earth$1,641 SGD

44 data points across 10 retailers

13 retailers$277 SGD to $1,641 SGD

A
Cheapest Retailer
-
$277 SGD
$216 USD
Final sale: no returns
A
Retailer 2
-
$306 SGD
$239 USD
View
B+
Retailer 3
-
$413 SGD
$322 USD
View
A
Retailer 4
-
$506 SGD
€376 EUR
View
A
Retailer 5
-
$557 SGD
£342 GBP
View
A
Retailer 6
-
$615 SGD
$480 USD
View
A
Retailer 7
-
$624 SGD
$487 USD
View
B+
Retailer 8
-
$737 SGD
$575 USD
View
B+
Retailer 9
-
$778 SGD
$607 USD
View
B+
Retailer 10
-
$1,055 SGD
$823 USD
View
Retailer 11
-
$1,442 SGD
£886 GBP
View
Price last confirmed 8 days ago
B
Retailer 12
-
$1,501 SGD
$1,171 USD
View
Most Expensive
B
Brilliant Earth
10788815A · Oct 29
$1,641 SGD
$1,280 USD
View
12 more retailers have this diamond
Prices start from $277 SGDSave up to $1,364 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
1.58ct Cushion
$277 SGD