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Round|Lab Grown|IGI

1.54ct K SI2 Round Lab Grown Diamond

ID • K/SI2 • IGI LG451055635

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055635

Diamond specifications and retailer prices

From $2,630 AUD
As of November 5, 2026
Save $3,088 AUD (54%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $8,690 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.54ct lab-grown round diamond

This 1.54ct lab-grown round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG451055635 or 451055635. Listed at 9 retailers as of November 5, 2026, with a 117% 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

1.54
Carat
K
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055635
Dimensions7.43 × 7.48 × 4.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Brown
Top View
7.43 mm7.48 mm1.54 ctK / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055635
Side View
Table 59.5%Crown 34.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $8,690 AUD|Low: $2,526 AUD|High: $8,830 AUD|Avg: $4,729 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 4$2,630 AUD
Retailer 5$3,051 AUD
Retailer 7$3,051 AUD
Retailer 2$3,337 AUD
Retailer 8$4,037 AUD
Retailer 6$4,783 AUD
Retailer 3$5,133 AUD
Retailer 9$6,828 AUD
MOH London$8,690 AUD

38 data points across 9 retailers

9 retailers$2,630 AUD to $5,718 AUD

B+
Cheapest Retailer
-
$2,630 AUD
B
Retailer 2
-
$2,861 AUD
View
Retailer 3
-
$3,051 AUD
View
Price last confirmed 25 days ago
B
Retailer 4
-
$3,051 AUD
View
B
Retailer 5
-
$3,337 AUD
View
B
Retailer 6
-
$4,783 AUD
View
B
Retailer 7
-
$5,133 AUD
View
B
Retailer 8
-
$5,718 AUD
View
Most Expensive
MOH London
LG451055635 · Nov 5
$8,690 AUD
£4,790 GBP
View
Price under review
8 more retailers have this diamond
Prices start from $2,630 AUDSave up to $3,088 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 Round
$2,630 AUD