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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 $197 USD
As of October 30, 2026
Save $853 USD (81%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,050 USD 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 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 29, 2026, with prices from $197 to $1,050, a $853 spread on the same certified stone. Brilliant Earth lists it at $1,050. 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
Color
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

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 30
Current: $1,050 USD|Low: $143 USD|High: $1,080 USD|Avg: $529 USD|-2.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 7$197 USD
Retailer 5$218 USD
Retailer 2$383 USD
Retailer 6$388 USD
Retailer 3$388 USD
Retailer 9$507 USD
Retailer 8$556 USD
Retailer 4$1,021 USD
Brilliant Earth$1,050 USD

36 data points across 9 retailers

9 retailers$197 USD to $1,050 USD

A
Cheapest Retailer
-
$197 USD
Final sale: no returns
Retailer 2
-
$218 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
$383 USD
€365 EUR
View
B+
Retailer 4
-
$388 USD
View
A
Retailer 5
-
$388 USD
£306 GBP
View
A
Retailer 6
-
$507 USD
View
A
Retailer 7
-
$556 USD
View
B+
Retailer 8
-
$1,021 USD
£804 GBP
View
Most Expensive
B
Brilliant Earth
9857590A · Oct 29
$1,050 USD
View
8 more retailers have this diamond
Prices start from $197 USDSave up to $853 USD

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
$197 USD