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Round|Natural|IGI

1.55ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 668457801

Shape and cutting style on the report: Round brilliant

Certificate IGI 668457801

Diamond specifications and retailer prices

From $5,864 NZD
$3,305 USD
As of November 1, 2026
Save $5,935 NZD (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $11,799 NZD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.55ct natural round diamond

This 1.55ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 668457801. Listed at 13 retailers as of October 30, 2026, with prices from $5,864 to $11,799, a $5,935 spread on the same certified stone. NZ Jewellers lists it at $11,799. 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

1.55
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.4°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 668457801
Dimensions7.45 × 7.52 × 4.49 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.45 mm7.52 mm1.55 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 668457801
Side View
Table 58.0%Crown 33.4°Girdle: THN-STKPavilion 40.8°Culet: NoneDepth 59.9%

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: $11,799 NZD|Low: $5,729 NZD|High: $11,799 NZD|Avg: $7,624 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 11$5,864 NZD
Retailer 13$6,011 NZD
Retailer 5$6,052 NZD
Retailer 12$6,251 NZD
Retailer 4$6,773 NZD
Retailer 15$6,773 NZD
Retailer 7$7,032 NZD
Retailer 14$7,033 NZD
Retailer 2$7,325 NZD
Retailer 10$7,808 NZD
Retailer 3$7,814 NZD
Retailer 9$7,895 NZD
Retailer 6$8,059 NZD
Retailer 8$11,325 NZD
NZ Jewellers$11,799 NZD

40 data points across 15 retailers

13 retailers$5,864 NZD to $11,799 NZD

A
Cheapest Retailer
-
$5,864 NZD
$3,305 USD
A
Retailer 2
-
$6,011 NZD
$3,388 USD
View
A
Retailer 3
-
$6,251 NZD
$3,523 USD
View
Final sale: no returns
A
Retailer 4
-
$6,773 NZD
$3,817 USD
View
A
Retailer 5
-
$6,773 NZD
$3,817 USD
View
A
Retailer 6
-
$7,032 NZD
$3,963 USD
View
A
Retailer 7
-
$7,033 NZD
$3,964 USD
View
A
Retailer 8
-
$7,325 NZD
£3,251 GBP
View
A
Retailer 9
-
$7,808 NZD
£3,465 GBP
View
B+
Retailer 10
-
$7,814 NZD
$4,404 USD
View
A
Retailer 11
-
$7,895 NZD
€4,238 EUR
View
B+
Retailer 12
-
$11,325 NZD
£5,026 GBP
View
Most Expensive
B
NZ Jewellers
e9cd51c0-6bd9-4603-b3f2-4a85b77b4a21 · Oct 30
$11,799 NZD
$6,650 USD
View
12 more retailers have this diamond
Prices start from $5,864 NZDSave up to $5,935 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
1.55ct Round
$5,864 NZD