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Cushion|Lab Grown|IGI

1.58ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG583324122

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG583324122

Diamond specifications and retailer prices

From $252 SGD
$197 USD
As of November 1, 2026
Save $1,090 SGD (81%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,342 SGD at Brilliant Earth · As of October 31, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG583324122 or 583324122. Listed at 9 retailers as of October 31, 2026, with prices from $252 to $1,342, a $1,090 spread on the same certified stone. Brilliant Earth lists it at $1,342. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.9°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG583324122
Dimensions7.94 × 6.39 × 4.21 mm
L/W Ratio1.24
Girdle conditionFaceted
Culet sizePointed
Top View
7.94 mm6.39 mm1.58 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG583324122
Side View
Table 66.0%Crown 30.9°Girdle: THN-STKPavilion 40.5°Culet: NoneDepth 65.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $1,342 SGD|Low: $183 SGD|High: $1,381 SGD|Avg: $677 SGD|-2.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7$252 SGD
Retailer 5$279 SGD
Retailer 3$490 SGD
Retailer 6$496 SGD
Retailer 2$500 SGD
Retailer 9$648 SGD
Retailer 8$711 SGD
Retailer 4$1,305 SGD
Brilliant Earth$1,342 SGD

35 data points across 9 retailers

9 retailers$252 SGD to $1,342 SGD

A
Cheapest Retailer
-
$252 SGD
$197 USD
Final sale: no returns
Retailer 2
-
$279 SGD
$218 USD
View
Price last confirmed 20 days ago
A
Retailer 3
-
$490 SGD
€365 EUR
View
B+
Retailer 4
-
$496 SGD
$388 USD
View
A
Retailer 5
-
$500 SGD
£308 GBP
View
A
Retailer 6
-
$648 SGD
$507 USD
View
A
Retailer 7
-
$711 SGD
$556 USD
View
Retailer 8
-
$1,305 SGD
£804 GBP
View
Price last confirmed 7 days ago
Most Expensive
B
Brilliant Earth
9857590A · Oct 31
$1,342 SGD
$1,050 USD
View
8 more retailers have this diamond
Prices start from $252 SGDSave up to $1,090 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
$252 SGD