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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 $978 NZD
$551 USD
As of October 30, 2026
Save $7,841 NZD (89%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,818 NZD at Brilliant Earth · As of October 31, 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 $978 to $8,818, a $7,841 spread on the same certified stone. Brilliant Earth lists it at $8,818. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $8,818 NZD|Low: $978 NZD|High: $15,401 NZD|Avg: $3,535 NZD|-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$978 NZD
Retailer 11$1,095 NZD
Retailer 3$1,212 NZD
Retailer 5$1,212 NZD
Retailer 14$1,275 NZD
Retailer 4$1,402 NZD
Retailer 6$1,872 NZD
Retailer 9$1,890 NZD
Retailer 2$1,947 NZD
Retailer 7$2,017 NZD
Retailer 12$3,128 NZD
Retailer 16$3,188 NZD
Retailer 8$4,457 NZD
Retailer 10$5,268 NZD
Retailer 13$7,301 NZD
Brilliant Earth$8,818 NZD

36 data points across 16 retailers

16 retailers$978 NZD to $8,818 NZD

A
Cheapest Retailer
-
$978 NZD
$551 USD
B+
Retailer 2
-
$1,095 NZD
$617 USD
View
B+
Retailer 3
-
$1,212 NZD
$683 USD
View
Retailer 4
-
$1,212 NZD
$683 USD
View
Price last confirmed 15 days ago
Retailer 5
-
$1,275 NZD
£566 GBP
View
Price last confirmed 14 days ago
B+
Retailer 6
-
$1,402 NZD
$790 USD
View
B
Retailer 7
-
$1,872 NZD
$1,055 USD
View
B+
Retailer 8
-
$1,890 NZD
£839 GBP
View
B+
Retailer 9
-
$1,947 NZD
€1,045 EUR
View
B+
Retailer 10
-
$2,017 NZD
$1,137 USD
View
B
Retailer 11
-
$3,128 NZD
$1,763 USD
View
B
Retailer 12
-
$3,188 NZD
$1,797 USD
View
B
Retailer 13
-
$4,457 NZD
$2,512 USD
View
B
Retailer 14
-
$5,268 NZD
£2,338 GBP
View
Retailer 15
-
$7,301 NZD
$4,115 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
11923361A · Oct 31
$8,818 NZD
$4,970 USD
View
15 more retailers have this diamond
Prices start from $978 NZDSave up to $7,841 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
5.58ct Radiant
$978 NZD