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Round|Natural|IGI

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 $4,909 AUD
As of November 4, 2026
Save $4,727 AUD (49%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $9,636 AUD at NZ Jewellers · As of November 5, 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 $4,909 to $9,636, a $4,727 spread on the same certified stone. NZ Jewellers lists it at $9,636. 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

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 4
Current: $9,636 AUD|Low: $4,909 AUD|High: $10,130 AUD|Avg: $6,280 AUD
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 6, 2026
Retailer 7$4,909 AUD
Retailer 14$4,977 AUD
Retailer 5$5,106 AUD
Retailer 8$5,124 AUD
Retailer 4$5,290 AUD
Retailer 6$5,531 AUD
Retailer 16$5,531 AUD
Retailer 15$5,743 AUD
Retailer 9$5,794 AUD
Retailer 11$6,357 AUD
Retailer 3$6,382 AUD
Retailer 12$6,426 AUD
Retailer 2$6,570 AUD
Retailer 10$6,750 AUD
Retailer 13$9,224 AUD
NZ Jewellers$9,636 AUD

36 data points across 16 retailers

16 retailers$4,909 AUD to $9,636 AUD

A
Cheapest Retailer
-
$4,909 AUD
A
Retailer 2
-
$4,977 AUD
View
A
Retailer 3
-
$5,106 AUD
View
Final sale: no returns
A
Retailer 4
-
$5,124 AUD
View
A
Retailer 5
-
$5,290 AUD
View
B+
Retailer 6
-
$5,531 AUD
View
Retailer 7
-
$5,531 AUD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$5,743 AUD
View
A
Retailer 9
-
$5,794 AUD
View
B+
Retailer 10
-
$6,357 AUD
View
B+
Retailer 11
-
$6,382 AUD
View
B+
Retailer 12
-
$6,426 AUD
View
B+
Retailer 13
-
$6,570 AUD
View
B+
Retailer 14
-
$6,750 AUD
View
B
Retailer 15
-
$9,224 AUD
View
Most Expensive
B
NZ Jewellers
e9241f48-9b2c-4d57-a740-646cbf1c56e5 · Nov 5
$9,636 AUD
$6,621 USD
View
15 more retailers have this diamond
Prices start from $4,909 AUDSave up to $4,727 AUD

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
$4,909 AUD