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Round|Natural|IGI

1.55ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 705504970

Shape and cutting style on the report: Round brilliant

Certificate IGI 705504970

Diamond specifications and retailer prices

From $3,155 SGD
As of November 6, 2026
Save $3,586 SGD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,042 SGD at NZ Jewellers · As of September 28, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 705504970. Listed at 17 retailers as of November 4, 2026, with a 114% 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

1.55
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 705504970
Dimensions7.39 × 7.30 × 4.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.39 mm7.30 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 705504970
Side View
Table 56.0%Crown 36.4°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.3%

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: $3,155 SGD|Low: $3,155 SGD|High: $6,840 SGD|Avg: $4,627 SGD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1$3,155 SGD
Retailer 9$3,621 SGD
Retailer 8$3,719 SGD
Retailer 3$4,233 SGD
Retailer 4$4,638 SGD
Retailer 6$4,701 SGD
Retailer 2$4,801 SGD
Retailer 5$4,933 SGD
Retailer 7$6,741 SGD

29 data points across 9 retailers

17 retailers$3,155 SGD to $6,741 SGD

A
Cheapest Retailer
-
$3,155 SGD
A
Retailer 2
-
$3,619 SGD
View
A
Retailer 3
-
$3,621 SGD
View
Retailer 4
-
$3,647 SGD
View
Price last confirmed 95 days ago
A
Retailer 5
-
$3,719 SGD
View
Retailer 6
-
$4,042 SGD
View
Price last confirmed 29 days ago
Retailer 7
-
$4,042 SGD
View
Price last confirmed 25 days ago
Retailer 8
-
$4,197 SGD
View
Price last confirmed 38 days ago
B+
Retailer 9
-
$4,225 SGD
View
A
Retailer 10
-
$4,233 SGD
View
A
Retailer 11
-
$4,638 SGD
View
Retailer 12
-
$4,664 SGD
View
Price last confirmed 28 days ago
A
Retailer 13
-
$4,701 SGD
View
A
Retailer 14
-
$4,801 SGD
View
B+
Retailer 15
-
$4,933 SGD
View
B
Retailer 16
-
$6,741 SGD
View
Most Expensive
NZ Jewellers
b2817a39-33a7-4b8a-af58-a4013ba9c877 · Sep 28
$7,042 SGD
$5,495 USD
View
Price last confirmed 39 days ago
16 more retailers have this diamond
Prices start from $3,155 SGDSave up to $3,586 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
$3,155 SGD