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1.55ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 819632954

Shape and cutting style on the report: Round brilliant

Certificate IGI 819632954

Diamond specifications and retailer prices

From $4,323 SGD
As of November 4, 2026
Save $4,163 SGD (49%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,485 SGD at NZ Jewellers · As of November 7, 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 819632954. Listed at 16 retailers as of November 4, 2026, with prices from $4,323 to $8,485, a $4,163 spread on the same certified stone. NZ Jewellers lists it at $8,485. 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
FluorescenceFaint
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 819632954
Dimensions7.37 × 7.40 × 4.64 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
7.37 mm7.40 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 819632954
Side View
Table 57.0%Crown 33°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.8%

Caratlytics Score

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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 4
Current: $8,485 SGD|Low: $4,323 SGD|High: $8,920 SGD|Avg: $5,528 SGD
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
Retailer 16
November 7, 2026
Retailer 7$4,323 SGD
Retailer 14$4,383 SGD
Retailer 5$4,496 SGD
Retailer 8$4,513 SGD
Retailer 4$4,659 SGD
Retailer 6$4,870 SGD
Retailer 16$4,870 SGD
Retailer 15$5,057 SGD
Retailer 9$5,102 SGD
Retailer 12$5,598 SGD
Retailer 3$5,620 SGD
Retailer 13$5,658 SGD
Retailer 10$5,785 SGD
Retailer 11$5,944 SGD
Retailer 2$8,102 SGD
NZ Jewellers$8,485 SGD

37 data points across 16 retailers

16 retailers$4,323 SGD to $8,485 SGD

A
Cheapest Retailer
-
$4,323 SGD
A
Retailer 2
-
$4,383 SGD
View
A
Retailer 3
-
$4,496 SGD
View
Final sale: no returns
A
Retailer 4
-
$4,513 SGD
View
A
Retailer 5
-
$4,659 SGD
View
B+
Retailer 6
-
$4,870 SGD
View
Retailer 7
-
$4,870 SGD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$5,057 SGD
View
A
Retailer 9
-
$5,102 SGD
View
B+
Retailer 10
-
$5,598 SGD
View
B+
Retailer 11
-
$5,620 SGD
View
B+
Retailer 12
-
$5,658 SGD
View
B+
Retailer 13
-
$5,785 SGD
View
B+
Retailer 14
-
$5,944 SGD
View
B
Retailer 15
-
$8,102 SGD
View
Most Expensive
B
NZ Jewellers
e9241f48-9b2c-4d57-a740-646cbf1c56e5 · Nov 7
$8,485 SGD
$6,621 USD
View
15 more retailers have this diamond
Prices start from $4,323 SGDSave up to $4,163 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
$4,323 SGD