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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 $4,866 USD
As of October 28, 2026
Save $4,466 USD (48%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,332 USD at NZ Jewellers · As of October 27, 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 27, 2026, with prices from $4,866 to $9,332, a $4,466 spread on the same certified stone. NZ Jewellers lists it at $9,332. 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
Color
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 28
Current: $5,633 USD|Low: $4,292 USD|High: $8,778 USD|Avg: $5,885 USD|-0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 8$4,866 USD
Retailer 7$4,905 USD
Retailer 9$5,150 USD
Retailer 10$5,220 USD
Retailer 5$5,481 USD
Retailer 2$5,580 USD
Retailer 1$5,633 USD
Retailer 4$5,957 USD
Retailer 6$6,794 USD
Retailer 3$8,720 USD

42 data points across 10 retailers

15 retailers$4,866 USD to $9,332 USD

A
Cheapest Retailer
-
$4,866 USD
A
Retailer 2
-
$4,905 USD
View
Price last confirmed 11 days ago
B+
Retailer 3
-
$5,150 USD
View
Final sale: no returns
A
Retailer 4
-
$5,220 USD
View
A
Retailer 5
-
$5,481 USD
£4,316 GBP
View
B+
Retailer 6
-
$5,580 USD
View
B+
Retailer 7
-
$5,580 USD
View
B+
Retailer 8
-
$5,580 USD
View
B+
Retailer 9
-
$5,633 USD
£4,436 GBP
View
B+
Retailer 10
-
$5,734 USD
View
B+
Retailer 11
-
$5,957 USD
€5,673 EUR
View
B+
Retailer 12
-
$6,438 USD
View
B+
Retailer 13
-
$6,794 USD
ZAR 109,764 ZAR
View
B
Retailer 14
-
$8,720 USD
£6,866 GBP
View
Most Expensive
B
NZ Jewellers
4fa767b2-f529-4498-92f7-20d2810a8a0d · Oct 27
$9,332 USD
View
14 more retailers have this diamond
Prices start from $4,866 USDSave up to $4,466 USD

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
$4,866 USD