CaratHunter
Plans
Round|Natural|IGI

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 $8,634 NZD
$4,866 USD
As of November 1, 2026
Save $7,924 NZD (48%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $16,558 NZD 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 $8,634 to $16,558, a $7,924 spread on the same certified stone. NZ Jewellers lists it at $16,558. 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: Nov 1
Current: $9,785 NZD|Low: $7,615 NZD|High: $15,575 NZD|Avg: $10,612 NZD|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 7$8,634 NZD
Retailer 6$8,703 NZD
Retailer 8$9,138 NZD
Retailer 1$9,785 NZD
Retailer 9$9,901 NZD
Retailer 3$9,938 NZD
Retailer 2$10,537 NZD
Retailer 5$12,169 NZD
Retailer 4$15,388 NZD

41 data points across 9 retailers

15 retailers$8,634 NZD to $16,558 NZD

A
Cheapest Retailer
-
$8,634 NZD
$4,866 USD
A
Retailer 2
-
$8,703 NZD
$4,905 USD
View
B+
Retailer 3
-
$9,138 NZD
$5,150 USD
View
Final sale: no returns
A
Retailer 4
-
$9,262 NZD
$5,220 USD
View
A
Retailer 5
-
$9,785 NZD
£4,342 GBP
View
B+
Retailer 6
-
$9,901 NZD
$5,580 USD
View
B+
Retailer 7
-
$9,901 NZD
$5,580 USD
View
B+
Retailer 8
-
$9,901 NZD
$5,580 USD
View
A
Retailer 9
-
$9,938 NZD
£4,410 GBP
View
B+
Retailer 10
-
$10,174 NZD
$5,734 USD
View
B+
Retailer 11
-
$10,537 NZD
€5,656 EUR
View
B+
Retailer 12
-
$11,423 NZD
$6,438 USD
View
B+
Retailer 13
-
$12,169 NZD
ZAR 110,799 ZAR
View
B
Retailer 14
-
$15,388 NZD
£6,829 GBP
View
Most Expensive
B
NZ Jewellers
4fa767b2-f529-4498-92f7-20d2810a8a0d · Oct 30
$16,558 NZD
$9,332 USD
View
14 more retailers have this diamond
Prices start from $8,634 NZDSave up to $7,924 NZD

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
$8,634 NZD