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Round|Natural|IGI

1.53ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 826683678

Shape and cutting style on the report: Round brilliant

Certificate IGI 826683678

Diamond specifications and retailer prices

From $3,122 NZD
As of November 6, 2026
Save $3,794 NZD (55%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,277 NZD at NZ Jewellers · As of September 19, 2026
View at NZ Jewellers

About this 1.53ct natural round diamond

This 1.53ct 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 826683678. Listed at 14 retailers as of November 4, 2026, with a 122% 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

1.53
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 826683678
Dimensions7.28 × 7.30 × 4.59 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
7.28 mm7.30 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 826683678
Side View
Table 57.0%Crown 36.1°Girdle: MED-STKPavilion 40.8°CuletDepth 62.9%

Caratlytics Score

How it works →
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: $3,122 NZD|Low: $3,122 NZD|High: $7,009 NZD|Avg: $4,521 NZD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 1$3,122 NZD
Retailer 7$3,576 NZD
Retailer 2$4,310 NZD
Retailer 3$4,351 NZD
Retailer 4$4,831 NZD
Retailer 5$4,912 NZD
Retailer 6$6,916 NZD

28 data points across 7 retailers

14 retailers$3,122 NZD to $6,916 NZD

A
Cheapest Retailer
-
$3,122 NZD
A
Retailer 2
-
$3,576 NZD
View
Retailer 3
-
$3,960 NZD
View
Price last confirmed 44 days ago
Retailer 4
-
$3,960 NZD
View
Price last confirmed 29 days ago
B+
Retailer 5
-
$3,976 NZD
View
Retailer 6
-
$4,141 NZD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$4,205 NZD
View
A
Retailer 8
-
$4,310 NZD
View
A
Retailer 9
-
$4,351 NZD
View
Retailer 10
-
$4,568 NZD
View
Price last confirmed 45 days ago
A
Retailer 11
-
$4,831 NZD
View
A
Retailer 12
-
$4,912 NZD
View
B+
Retailer 13
-
$6,916 NZD
View
Most Expensive
NZ Jewellers
67bfcd6f-b34b-412d-b10d-40a3ec8d55c0 · Sep 19
$8,277 NZD
$4,653 USD
View
Price last confirmed 47 days ago
13 more retailers have this diamond
Prices start from $3,122 NZDSave up to $3,794 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
1.53ct Round
$3,122 NZD