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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 $385 NZD
$216 USD
As of October 28, 2026
Save $1,894 NZD (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,279 NZD at Brilliant Earth · As of October 28, 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 $385 to $2,279, a $1,894 spread on the same certified stone. Brilliant Earth lists it at $2,279. 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: $2,279 NZD|Low: $385 NZD|High: $2,439 NZD|Avg: $1,030 NZD|-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$385 NZD
Retailer 7$426 NZD
Retailer 4$573 NZD
Retailer 3$703 NZD
Retailer 2$774 NZD
Retailer 10$854 NZD
Retailer 8$1,024 NZD
Retailer 6$1,081 NZD
Retailer 5$2,003 NZD
Brilliant Earth$2,279 NZD

44 data points across 10 retailers

13 retailers$385 NZD to $2,279 NZD

A
Cheapest Retailer
-
$385 NZD
$216 USD
Final sale: no returns
A
Retailer 2
-
$426 NZD
$239 USD
View
B+
Retailer 3
-
$573 NZD
$322 USD
View
A
Retailer 4
-
$703 NZD
€376 EUR
View
A
Retailer 5
-
$774 NZD
£342 GBP
View
A
Retailer 6
-
$854 NZD
$480 USD
View
A
Retailer 7
-
$867 NZD
$487 USD
View
B+
Retailer 8
-
$1,024 NZD
$575 USD
View
B+
Retailer 9
-
$1,081 NZD
$607 USD
View
B+
Retailer 10
-
$1,465 NZD
$823 USD
View
B
Retailer 11
-
$2,003 NZD
£886 GBP
View
Price last confirmed 8 days ago
B
Retailer 12
-
$2,085 NZD
$1,171 USD
View
Most Expensive
B
Brilliant Earth
10788815A · Oct 28
$2,279 NZD
$1,280 USD
View
12 more retailers have this diamond
Prices start from $385 NZDSave up to $1,894 NZD

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
$385 NZD