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1.54ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 642405010

Shape and cutting style on the report: Round brilliant

Certificate IGI 642405010

Diamond specifications and retailer prices

From $6,221 SGD
$4,866 USD
As of October 30, 2026
Save $5,709 SGD (48%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $11,930 SGD at NZ Jewellers · As of October 30, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 642405010. Listed at 15 retailers as of October 30, 2026, with prices from $6,221 to $11,930, a $5,709 spread on the same certified stone. NZ Jewellers lists it at $11,930. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 642405010
Dimensions7.36 × 7.29 × 4.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.36 mm7.29 mm1.54 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 642405010
Side View
Table 57.0%Crown 34.6°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.3%

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 30
Current: $7,160 SGD|Low: $5,487 SGD|High: $11,222 SGD|Avg: $7,658 SGD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7$6,221 SGD
Retailer 6$6,271 SGD
Retailer 8$6,584 SGD
Retailer 3$7,050 SGD
Retailer 9$7,133 SGD
Retailer 1$7,160 SGD
Retailer 5$7,626 SGD
Retailer 4$8,768 SGD
Retailer 2$11,087 SGD

41 data points across 9 retailers

15 retailers$6,221 SGD to $11,930 SGD

A
Cheapest Retailer
-
$6,221 SGD
$4,866 USD
A
Retailer 2
-
$6,271 SGD
$4,905 USD
View
B+
Retailer 3
-
$6,584 SGD
$5,150 USD
View
Final sale: no returns
A
Retailer 4
-
$6,673 SGD
$5,220 USD
View
A
Retailer 5
-
$7,050 SGD
£4,342 GBP
View
B+
Retailer 6
-
$7,133 SGD
$5,580 USD
View
B+
Retailer 7
-
$7,133 SGD
$5,580 USD
View
B+
Retailer 8
-
$7,133 SGD
$5,580 USD
View
A
Retailer 9
-
$7,160 SGD
£4,410 GBP
View
B+
Retailer 10
-
$7,330 SGD
$5,734 USD
View
B+
Retailer 11
-
$7,626 SGD
€5,681 EUR
View
B+
Retailer 12
-
$8,230 SGD
$6,438 USD
View
B+
Retailer 13
-
$8,768 SGD
ZAR 110,799 ZAR
View
B
Retailer 14
-
$11,087 SGD
£6,829 GBP
View
Most Expensive
B
NZ Jewellers
4fa767b2-f529-4498-92f7-20d2810a8a0d · Oct 30
$11,930 SGD
$9,332 USD
View
14 more retailers have this diamond
Prices start from $6,221 SGDSave up to $5,709 SGD

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
$6,221 SGD