Round|Natural|IGI

1.53ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 642405110

Shape and cutting style on the report: Round brilliant

Certificate IGI 642405110

Diamond specifications and retailer prices

From $6,606 NZD
$3,717 USD
As of November 2, 2026
Save $1,117 NZD (14%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $12,992 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 642405110. Listed at 13 retailers as of November 2, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 642405110
Dimensions7.37 × 7.42 × 4.53 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.37 mm7.42 mm1.53 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 642405110
Side View
Table 61.0%Crown 35°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $6,963 NZD|Low: $5,735 NZD|High: $12,620 NZD|Avg: $8,012 NZD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 3$6,606 NZD
Retailer 4$6,754 NZD
Retailer 8$6,882 NZD
Retailer 1$6,963 NZD
Retailer 9$7,458 NZD
Retailer 2$7,723 NZD
Retailer 6$8,388 NZD
Retailer 5$9,000 NZD
Retailer 7$12,288 NZD

30 data points across 9 retailers

13 retailers$6,606 NZD to $7,723 NZD

A
Cheapest Retailer
-
$6,606 NZD
$3,717 USD
Retailer 2
-
$6,754 NZD
$3,800 USD
View
Price last confirmed 9 days ago
A
Retailer 3
-
$6,963 NZD
$3,918 USD
View
Retailer 4
-
$7,083 NZD
$3,985 USD
View
Price last confirmed 98 days ago
Retailer 5
-
$7,458 NZD
$4,196 USD
View
Price last confirmed 40 days ago
Retailer 6
-
$7,674 NZD
$4,318 USD
View
Price last confirmed 15 days ago
Retailer 7
-
$7,674 NZD
$4,318 USD
View
Price last confirmed 17 days ago
A
Retailer 8
-
$7,723 NZD
£3,422 GBP
View
Retailer 9
-
$8,388 NZD
€4,495 EUR
View
Price last confirmed 11 days ago
Retailer 10
-
$8,604 NZD
$4,841 USD
View
Price last confirmed 41 days ago
Retailer 11
-
$9,000 NZD
ZAR 81,804 ZAR
View
Price last confirmed 11 days ago
Retailer 12
-
$12,288 NZD
£5,444 GBP
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
a8833919-68e5-4601-bf50-ec555be2abf0 · Sep 19
$12,992 NZD
$7,310 USD
View
Price last confirmed 43 days ago
12 more retailers have this diamond
Prices start from $6,606 NZDSave up to $1,117 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
$6,606 NZD