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Radiant|Lab Grown|IGI

1.55ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG641483559

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

Certificate IGI LG641483559

Diamond specifications and retailer prices

From $323 NZD
$182 USD
As of October 30, 2026
Save $1,690 NZD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,013 NZD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

About this 1.55ct lab-grown radiant diamond

This 1.55ct lab-grown radiant 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 LG641483559 or 641483559. Listed at 19 retailers as of October 30, 2026, with prices from $323 to $2,013, a $1,690 spread on the same certified stone. Reve Diamonds lists it at $2,013. 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

1.55
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG641483559
Dimensions8.24 × 5.68 × 3.73 mm
L/W Ratio1.45
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.24 mm5.68 mm1.55 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG641483559
Side View
Table 63.0%Crown 43°Girdle: MED-STKPavilion 35.1°Culet: NoneDepth 65.7%

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: $1,027 NZD|Low: $302 NZD|High: $2,040 NZD|Avg: $925 NZD|+13.8%
Retailer 1
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
Reve Diamonds
October 31, 2026
Retailer 12$323 NZD
Retailer 3$399 NZD
Retailer 11$412 NZD
Retailer 14$513 NZD
Retailer 5$656 NZD
Retailer 13$704 NZD
Retailer 15$720 NZD
Retailer 8$830 NZD
Retailer 9$995 NZD
Retailer 1$1,027 NZD
Retailer 7$1,253 NZD
Retailer 2$1,380 NZD
Retailer 6$1,535 NZD
Retailer 10$1,792 NZD
Retailer 4$1,832 NZD
Reve Diamonds$2,013 NZD

35 data points across 16 retailers

19 retailers$323 NZD to $2,013 NZD

A
Cheapest Retailer
-
$323 NZD
$182 USD
A
Retailer 2
-
$364 NZD
$205 USD
View
A
Retailer 3
-
$390 NZD
$220 USD
View
A
Retailer 4
-
$399 NZD
$225 USD
View
A
Retailer 5
-
$412 NZD
$232 USD
View
Final sale: no returns
A
Retailer 6
-
$513 NZD
£228 GBP
View
Retailer 7
-
$656 NZD
€352 EUR
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$704 NZD
$397 USD
View
A
Retailer 9
-
$720 NZD
£320 GBP
View
A
Retailer 10
-
$830 NZD
$468 USD
View
B+
Retailer 11
-
$995 NZD
$561 USD
View
B+
Retailer 12
-
$1,027 NZD
$579 USD
View
B
Retailer 13
-
$1,253 NZD
$706 USD
View
B+
Retailer 14
-
$1,380 NZD
$778 USD
View
B+
Retailer 15
-
$1,400 NZD
£621 GBP
View
Retailer 16
-
$1,535 NZD
$865 USD
View
Price last confirmed 12 days ago
B
Retailer 17
-
$1,792 NZD
$1,010 USD
View
B
Retailer 18
-
$1,832 NZD
£813 GBP
View
Most Expensive
B
Reve Diamonds
27F484ECB · Oct 30
$2,013 NZD
$1,135 USD
View
18 more retailers have this diamond
Prices start from $323 NZDSave up to $1,690 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
1.55ct Radiant
$323 NZD