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Radiant|Lab Grown|IGI

1.54ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG551273804

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

Certificate IGI LG551273804

Diamond specifications and retailer prices

From $1,572 AUD
As of November 6, 2026
Save $652 AUD (29%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,224 AUD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.54ct lab-grown radiant diamond

This 1.54ct 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 LG551273804 or 551273804. Listed at 2 retailers as of November 5, 2026, with prices from $1,572 to $2,224, a $652 spread on the same certified stone. Diamond Quarter lists it at $2,224. 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

1.54
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG551273804
Dimensions8.26 × 5.65 × 3.85 mm
L/W Ratio1.46
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
8.26 mm5.65 mm1.54 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG551273804
Side View
Table 65.0%Crown 42.7°Girdle: MediumPavilion 35°Culet: NoneDepth 68.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $502 AUD|Low: $485 AUD|High: $2,358 AUD|Avg: $1,148 AUD|-20.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
April 26, 2026
Retailer 6$485 AUD
Retailer 1$502 AUD
Retailer 3$725 AUD
Retailer 8$899 AUD
Retailer 2$907 AUD
Retailer 9$953 AUD
Retailer 5$1,020 AUD
Retailer 7$1,572 AUD
Retailer 4$2,038 AUD

53 data points across 9 retailers

2 retailers$1,572 AUD to $2,224 AUD

B
Cheapest Retailer
-
$1,572 AUD
Most Expensive
B
Diamond Quarter
1.54SI1FLG044709N · Nov 5
$2,224 AUD
£1,203 GBP
View
1 more retailer has this diamond
Prices start from $1,572 AUDSave up to $652 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
1.54ct Radiant
$1,572 AUD