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Radiant|Lab Grown|IGI

1.50ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG522254167

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

Certificate IGI LG522254167

Diamond specifications and retailer prices

From $2,940 NZD
As of November 6, 2026
Save $2,511 NZD (46%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,503 NZD at NZ Jewellers · As of November 6, 2026
View at NZ Jewellers

About this 1.5ct lab-grown radiant diamond

This 1.5ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG522254167 or 522254167. Listed at 12 retailers as of November 6, 2026, with a 85% 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

1.50
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle31.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG522254167
Dimensions7.45 × 5.42 × 3.95 mm
L/W Ratio1.37
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
7.45 mm5.42 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG522254167
Side View
Table 68.0%Crown 45.5°Girdle: STK-THKPavilion 31.1°Culet: NoneDepth 72.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,869 NZD|Low: $2,872 NZD|High: $10,041 NZD|Avg: $4,767 NZD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 7, 2026
Retailer 5$2,940 NZD
Retailer 4$2,991 NZD
Retailer 8$3,348 NZD
Retailer 6$3,469 NZD
Retailer 9$3,779 NZD
Retailer 1$4,869 NZD
Retailer 7$5,451 NZD
Retailer 3$5,982 NZD
Retailer 2$9,882 NZD

44 data points across 9 retailers

12 retailers$2,940 NZD to $5,451 NZD

B
Cheapest Retailer
-
$2,940 NZD
B
Retailer 2
-
$2,991 NZD
View
B
Retailer 3
-
$3,254 NZD
View
B
Retailer 4
-
$3,348 NZD
View
Final sale: no returns
Retailer 5
-
$3,469 NZD
View
Price last confirmed 26 days ago
B
Retailer 6
-
$3,469 NZD
View
B
Retailer 7
-
$3,779 NZD
View
B
Retailer 8
-
$4,869 NZD
View
B
Retailer 9
-
$5,451 NZD
View
Retailer 10
-
$5,982 NZD
View
Price under review
Most Expensive
NZ Jewellers
fe7792eb-3ee3-49cd-a710-032bdd2571a0 · Nov 6
$6,503 NZD
$3,605 USD
View
Price under review
10 more retailers have this diamond
Prices start from $2,940 NZDSave up to $2,511 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
1.50ct Radiant
$2,940 NZD