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Round|Natural|IGI

1.54ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 675579653

Shape and cutting style on the report: Round brilliant

Certificate IGI 675579653

Diamond specifications and retailer prices

From $2,282 AUD
As of November 6, 2026
Save $2,739 AUD (55%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,011 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

About this 1.54ct natural round diamond

This 1.54ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 675579653. Listed at 14 retailers as of November 4, 2026, with a 120% 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 675579653
Dimensions7.36 × 7.33 × 4.60 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
7.36 mm7.33 mm1.54 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 675579653
Side View
Table 57.0%Crown 34.1°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,282 AUD|Low: $2,282 AUD|High: $5,095 AUD|Avg: $3,462 AUD|-2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 1$2,282 AUD
Retailer 2$3,129 AUD
Retailer 3$3,138 AUD
Retailer 4$3,508 AUD
Retailer 6$3,719 AUD
Retailer 5$5,021 AUD

31 data points across 6 retailers

14 retailers$2,282 AUD to $5,021 AUD

A
Cheapest Retailer
-
$2,282 AUD
A
Retailer 2
-
$2,596 AUD
View
Retailer 3
-
$2,874 AUD
View
Price last confirmed 25 days ago
Retailer 4
-
$2,874 AUD
View
Price last confirmed 29 days ago
A
Retailer 5
-
$2,933 AUD
View
Retailer 6
-
$3,007 AUD
View
Price last confirmed 38 days ago
A
Retailer 7
-
$3,074 AUD
View
A
Retailer 8
-
$3,129 AUD
View
A
Retailer 9
-
$3,138 AUD
View
Retailer 10
-
$3,317 AUD
View
Price last confirmed 28 days ago
A
Retailer 11
-
$3,508 AUD
View
A
Retailer 12
-
$3,719 AUD
View
A
Retailer 13
-
$5,021 AUD
View
Most Expensive
NZ Jewellers
ed34733b-e2ee-439d-8705-8e5892a02319 · Sep 28
$7,011 AUD
$4,817 USD
View
Price last confirmed 39 days ago
13 more retailers have this diamond
Prices start from $2,282 AUDSave up to $2,739 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 Round
$2,282 AUD