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Radiant|Lab Grown|IGI

1.54ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG492125287

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

Certificate IGI LG492125287

Diamond specifications and retailer prices

From $255 AUD
$179 USD
As of October 27, 2026
Save $3,187 AUD (93%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,442 AUD at B2C Jewels · As of October 29, 2026
View at B2C Jewels

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492125287 or 492125287. Listed at 13 retailers as of October 27, 2026, with prices from $255 to $3,442, a $3,187 spread on the same certified stone. B2C Jewels lists it at $3,442. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle28.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492125287
Dimensions10.37 × 7.13 × 4.39 mm
L/W Ratio1.45
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
10.37 mm7.13 mm1.54 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492125287
Side View
Table 61.5%Crown 38°Girdle: Slightly ThickPavilion 28.5°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $3,442 AUD|Low: $245 AUD|High: $3,442 AUD|Avg: $1,218 AUD
B2C Jewels
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 6$255 AUD
Retailer 11$286 AUD
Retailer 10$296 AUD
Retailer 2$449 AUD
Retailer 8$559 AUD
Retailer 5$1,073 AUD
Retailer 9$1,120 AUD
Retailer 7$1,537 AUD
Retailer 4$1,634 AUD
Retailer 3$2,448 AUD
B2C Jewels$3,442 AUD

36 data points across 11 retailers

13 retailers$255 AUD to $3,442 AUD

A
Cheapest Retailer
-
$255 AUD
$179 USD
A
Retailer 2
-
$286 AUD
$201 USD
View
Final sale: no returns
A
Retailer 3
-
$296 AUD
$208 USD
View
A
Retailer 4
-
$449 AUD
£249 GBP
View
B+
Retailer 5
-
$559 AUD
$393 USD
View
B
Retailer 6
-
$1,073 AUD
$754 USD
View
B+
Retailer 7
-
$1,120 AUD
$787 USD
View
B+
Retailer 8
-
$1,122 AUD
$788 USD
View
B
Retailer 9
-
$1,537 AUD
$1,080 USD
View
B
Retailer 10
-
$1,634 AUD
£904 GBP
View
B
Retailer 11
-
$2,432 AUD
£1,345 GBP
View
B
Retailer 12
-
$2,448 AUD
$1,720 USD
View
Most Expensive
B
B2C Jewels
20034071 · Oct 29
$3,442 AUD
$2,418 USD
View
12 more retailers have this diamond
Prices start from $255 AUDSave up to $3,187 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.

A
1.54ct Radiant
$255 AUD