Radiant|Lab Grown|IGI

5.58ct E SI1 Radiant Lab Grown Diamond

GD • E/SI1 • IGI LG658493594

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG658493594

Diamond specifications and retailer prices

From $551 USD
As of October 30, 2026
Save $4,419 USD (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,970 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 5.58ct lab-grown radiant diamond

This 5.58ct lab-grown radiant sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG658493594 or 658493594. Listed at 16 retailers as of October 30, 2026, with prices from $551 to $4,970, a $4,419 spread on the same certified stone. Brilliant Earth lists it at $4,970. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

5.58
Carat
E
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.7°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG658493594
Dimensions12.46 × 8.80 × 5.92 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.46 mm8.80 mm5.58 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG658493594
Side View
Table 64.0%Crown 40.7°Girdle: MediumPavilion 35.6°Culet: NoneDepth 67.3%

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: $4,970 USD|Low: $551 USD|High: $8,680 USD|Avg: $2,004 USD|-42.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 15$551 USD
Retailer 11$617 USD
Retailer 3$683 USD
Retailer 5$683 USD
Retailer 14$718 USD
Retailer 4$790 USD
Retailer 6$1,055 USD
Retailer 2$1,065 USD
Retailer 7$1,137 USD
Retailer 10$1,170 USD
Retailer 12$1,763 USD
Retailer 16$1,797 USD
Retailer 8$2,512 USD
Retailer 9$2,969 USD
Retailer 13$4,115 USD
Brilliant Earth$4,970 USD

37 data points across 16 retailers

16 retailers$551 USD to $4,970 USD

A
Cheapest Retailer
-
$551 USD
B+
Retailer 2
-
$617 USD
View
B+
Retailer 3
-
$683 USD
View
Retailer 4
-
$683 USD
View
Price last confirmed 15 days ago
Retailer 5
-
$718 USD
£566 GBP
View
Price last confirmed 14 days ago
B+
Retailer 6
-
$790 USD
View
B
Retailer 7
-
$1,055 USD
View
B+
Retailer 8
-
$1,065 USD
£839 GBP
View
B+
Retailer 9
-
$1,137 USD
View
Retailer 10
-
$1,170 USD
€1,114 EUR
View
Price last confirmed 8 days ago
B
Retailer 11
-
$1,763 USD
View
B
Retailer 12
-
$1,797 USD
View
B
Retailer 13
-
$2,512 USD
View
B
Retailer 14
-
$2,969 USD
£2,338 GBP
View
Retailer 15
-
$4,115 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
11923361A · Oct 30
$4,970 USD
View
15 more retailers have this diamond
Prices start from $551 USDSave up to $4,419 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
5.58ct Radiant
$551 USD