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Radiant|Lab Grown|IGI

1.50ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG670481184

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

Certificate IGI LG670481184

Diamond specifications and retailer prices

From $972 AUD
As of November 5, 2026
Save $1,633 AUD (63%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,605 AUD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

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 LG670481184 or 670481184. Listed at 2 retailers as of November 5, 2026, with prices from $972 to $2,605, a $1,633 spread on the same certified stone. Brilliant Earth lists it at $2,605. 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 angle40.9°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG670481184
Dimensions7.86 × 5.67 × 3.84 mm
L/W Ratio1.39
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.86 mm5.67 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG670481184
Side View
Table 66.0%Crown 40.9°Girdle: Slightly ThickPavilion 34.9°Culet: NoneDepth 67.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: $2,605 AUD|Low: $1,009 AUD|High: $2,605 AUD|Avg: $1,896 AUD
Brilliant Earth
Retailer 2
December 30, 2025
Retailer 2$1,009 AUD
Brilliant Earth$2,605 AUD

5 data points across 2 retailers

2 retailers$972 AUD to $2,605 AUD

B+
Cheapest Retailer
-
$972 AUD
Most Expensive
B
Brilliant Earth
12593334A · Nov 6
$2,605 AUD
$1,790 USD
View
1 more retailer has this diamond
Prices start from $972 AUDSave up to $1,633 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
$972 AUD