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1.55ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 780669607

Shape and cutting style on the report: Round brilliant

Certificate IGI 780669607

Diamond specifications and retailer prices

From $3,482 NZD
SGD 2,652 SGD
As of October 31, 2026
Save $5,746 NZD (62%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $9,228 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 780669607. Listed at 7 retailers as of October 30, 2026, with prices from $3,482 to $9,228, a $5,746 spread on the same certified stone. NZ Jewellers lists it at $9,228. 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
FluorescenceNone
Crown angle34°
Pavilion angle41.7°
OriginNatural
Grading LabIGI
CertificateIGI 780669607
Dimensions7.39 × 7.44 × 4.62 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
7.39 mm7.44 mm1.55 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 780669607
Side View
Table 58.0%Crown 34°Girdle: MediumPavilion 41.7°Culet: NoneDepth 62.2%

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 31
Current: $9,228 NZD|Low: $3,453 NZD|High: $10,021 NZD|Avg: $5,969 NZD|-7.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 6$3,482 NZD
Retailer 4$4,414 NZD
Retailer 2$4,774 NZD
Retailer 7$4,815 NZD
Retailer 5$4,816 NZD
Retailer 3$7,734 NZD
NZ Jewellers$9,228 NZD

44 data points across 7 retailers

7 retailers$3,482 NZD to $9,228 NZD

A
Cheapest Retailer
-
$3,482 NZD
SGD 2,652 SGD
A
Retailer 2
-
$4,414 NZD
$2,488 USD
View
A
Retailer 3
-
$4,774 NZD
£2,119 GBP
View
A
Retailer 4
-
$4,815 NZD
$2,714 USD
View
A
Retailer 5
-
$4,816 NZD
$2,714 USD
View
A
Retailer 6
-
$7,734 NZD
£3,432 GBP
View
Most Expensive
B+
NZ Jewellers
15e4c9f3-3229-43cc-95e5-9977e36fde67 · Oct 30
$9,228 NZD
$5,201 USD
View
6 more retailers have this diamond
Prices start from $3,482 NZDSave up to $5,746 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
$3,482 NZD