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Radiant|Lab Grown|IGI

1.00ct E SI2 Radiant Lab Grown Diamond

ID • E/SI2 • IGI LG474115423

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

Certificate IGI LG474115423

Diamond specifications and retailer prices

From $1,057 NZD
As of November 6, 2026
Save $2,199 NZD (68%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,451 NZD at NZ Jewellers · As of November 6, 2026
View at NZ Jewellers

About this 1ct lab-grown radiant diamond

This 1ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG474115423 or 474115423. Listed at 10 retailers as of November 4, 2026, with a 208% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.00
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle50.4°
Pavilion angle30.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG474115423
Dimensions6.25 × 4.79 × 3.45 mm
L/W Ratio1.30
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.25 mm4.79 mm1.00 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG474115423
Side View
Table 67.0%Crown 50.4°Girdle: ThickPavilion 30.1°Culet: NoneDepth 72.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,451 NZD|Low: $1,016 NZD|High: $5,763 NZD|Avg: $2,327 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$1,057 NZD
Retailer 8$1,185 NZD
Retailer 9$1,185 NZD
Retailer 6$1,311 NZD
Retailer 7$2,015 NZD
Retailer 2$2,029 NZD
Retailer 4$3,256 NZD
NZ Jewellers$3,451 NZD
Retailer 3$5,695 NZD

43 data points across 9 retailers

10 retailers$1,057 NZD to $3,256 NZD

B+
Cheapest Retailer
-
$1,057 NZD
B
Retailer 2
-
$1,185 NZD
View
Final sale: no returns
B
Retailer 3
-
$1,185 NZD
View
Retailer 4
-
$1,311 NZD
View
Price last confirmed 22 days ago
B
Retailer 5
-
$1,311 NZD
View
B
Retailer 6
-
$2,015 NZD
View
B
Retailer 7
-
$2,029 NZD
View
B
Retailer 8
-
$3,256 NZD
View
Most Expensive
NZ Jewellers
2c24565e-93cb-4cc9-972a-0da2494af1a8 · Nov 6
$3,451 NZD
$1,913 USD
View
Price under review
8 more retailers have this diamond
Prices start from $1,057 NZDSave up to $2,199 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.

B+
1.00ct Radiant
$1,057 NZD