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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 $2,510 SGD
As of October 31, 2026
Save $4,142 SGD (62%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $6,652 SGD 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 $2,510 to $6,652, a $4,142 spread on the same certified stone. NZ Jewellers lists it at $6,652. 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: $6,652 SGD|Low: $2,489 SGD|High: $7,223 SGD|Avg: $4,302 SGD|-7.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 6$2,510 SGD
Retailer 4$3,182 SGD
Retailer 2$3,441 SGD
Retailer 7$3,471 SGD
Retailer 5$3,471 SGD
Retailer 3$5,574 SGD
NZ Jewellers$6,652 SGD

44 data points across 7 retailers

7 retailers$2,510 SGD to $6,652 SGD

A
Cheapest Retailer
-
$2,510 SGD
A
Retailer 2
-
$3,182 SGD
$2,488 USD
View
A
Retailer 3
-
$3,441 SGD
£2,119 GBP
View
A
Retailer 4
-
$3,471 SGD
$2,714 USD
View
A
Retailer 5
-
$3,471 SGD
$2,714 USD
View
A
Retailer 6
-
$5,574 SGD
£3,432 GBP
View
Most Expensive
B+
NZ Jewellers
15e4c9f3-3229-43cc-95e5-9977e36fde67 · Oct 30
$6,652 SGD
$5,201 USD
View
6 more retailers have this diamond
Prices start from $2,510 SGDSave up to $4,142 SGD

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
$2,510 SGD