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Radiant|Lab Grown|IGI

1.50ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG512225938

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

Certificate IGI LG512225938

Diamond specifications and retailer prices

From $2,372 AUD
As of November 6, 2026
Save $2,026 AUD (46%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $5,247 AUD 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 LG512225938 or 512225938. Listed at 13 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 angle42.4°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512225938
Dimensions7.52 × 5.83 × 3.95 mm
L/W Ratio1.29
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
7.52 mm5.83 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512225938
Side View
Table 66.0%Crown 42.4°Girdle: STK-THKPavilion 35°Culet: NoneDepth 67.8%

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: $3,928 AUD|Low: $2,317 AUD|High: $8,101 AUD|Avg: $4,268 AUD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 6$2,372 AUD
Retailer 5$2,413 AUD
Retailer 9$2,701 AUD
Retailer 7$2,799 AUD
Retailer 10$3,049 AUD
Retailer 1$3,928 AUD
Retailer 8$4,398 AUD
Retailer 4$4,826 AUD
Retailer 2$7,698 AUD
Retailer 3$7,973 AUD

45 data points across 10 retailers

13 retailers$2,372 AUD to $4,398 AUD

B
Cheapest Retailer
-
$2,372 AUD
B
Retailer 2
-
$2,413 AUD
View
B
Retailer 3
-
$2,626 AUD
View
B
Retailer 4
-
$2,701 AUD
View
Final sale: no returns
Retailer 5
-
$2,799 AUD
View
Price last confirmed 26 days ago
B
Retailer 6
-
$2,799 AUD
View
B
Retailer 7
-
$3,049 AUD
View
B
Retailer 8
-
$3,928 AUD
View
B
Retailer 9
-
$4,398 AUD
View
Retailer 10
-
$4,826 AUD
View
Price under review
Most Expensive
NZ Jewellers
58615348-14eb-4e0a-924d-935e33d6be81 · Nov 6
$5,247 AUD
$3,605 USD
View
Price under review
10 more retailers have this diamond
Prices start from $2,372 AUDSave up to $2,026 AUD

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
$2,372 AUD