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Cushion|Lab Grown|IGI

1.58ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG641410499

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG641410499

Diamond specifications and retailer prices

From $575 AUD
$404 USD
As of October 29, 2026
Save $1,320 AUD (70%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,895 AUD at Michael Trio · As of October 29, 2026
View at Michael Trio

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 LG641410499 or 641410499. Listed at 5 retailers as of October 29, 2026, with prices from $575 to $1,895, a $1,320 spread on the same certified stone. Michael Trio lists it at $1,895. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG641410499
Dimensions6.76 × 6.74 × 4.53 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.76 mm6.74 mm1.58 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG641410499
Side View
Table 61.0%Crown 33.3°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 67.2%

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: Oct 29
Current: $1,895 AUD|Low: $575 AUD|High: $1,895 AUD|Avg: $1,008 AUD
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 19, 2026
Retailer 4$575 AUD
Retailer 3$576 AUD
Retailer 5$656 AUD
Retailer 2$1,245 AUD
Michael Trio$1,895 AUD

6 data points across 5 retailers

5 retailers$575 AUD to $1,895 AUD

A
Cheapest Retailer
-
$575 AUD
$404 USD
A
Retailer 2
-
$576 AUD
$405 USD
View
A
Retailer 3
-
$656 AUD
HK$3,600 HKD
View
Retailer 4
-
$1,245 AUD
$875 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Michael Trio
9030354610 · Oct 29
$1,895 AUD
SGD 1,799 SGD
View
4 more retailers have this diamond
Prices start from $575 AUDSave up to $1,320 AUD

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
$575 AUD