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Round|Natural|IGI

1.55ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 536201745

Shape and cutting style on the report: Round brilliant

Certificate IGI 536201745

Diamond specifications and retailer prices

From $9,074 NZD
As of November 6, 2026
Save $8,116 NZD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $17,190 NZD at Allurez · As of November 5, 2026
View at Allurez

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 536201745. Listed at 15 retailers as of November 5, 2026, with prices from $9,074 to $17,190, a $8,116 spread on the same certified stone. Allurez lists it at $17,190. 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 angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabIGI
CertificateIGI 536201745
Dimensions7.41 × 7.37 × 4.62 mm
L/W Ratio1.01
Culet sizePointed
Top View
7.41 mm7.37 mm1.55 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 536201745
Side View
Table 57.5%Crown 34.5°Girdle: MediumPavilion 41.4°Culet: NoneDepth 62.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $17,190 NZD|Low: $4,977 NZD|High: $17,190 NZD|Avg: $6,730 NZD
Allurez
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 3, 2026
Retailer 12$5,322 NZD
Retailer 7$5,397 NZD
Retailer 14$5,430 NZD
Retailer 8$5,700 NZD
Retailer 4$5,884 NZD
Retailer 6$5,884 NZD
Retailer 16$6,110 NZD
Retailer 2$6,113 NZD
Retailer 3$6,788 NZD
Retailer 11$6,815 NZD
Retailer 10$6,844 NZD
Retailer 9$7,100 NZD
Retailer 15$7,111 NZD
Retailer 13$9,891 NZD
Retailer 5$10,250 NZD
Allurez$17,190 NZD

30 data points across 16 retailers

15 retailers$9,074 NZD to $17,190 NZD

Retailer 1
-
$5,322 NZD
Price last confirmed 19 days ago
Retailer 2
-
$5,397 NZD
View
Price last confirmed 14 days ago
Retailer 3
-
$5,700 NZD
View
Price last confirmed 14 days ago
Retailer 4
-
$5,884 NZD
View
Price last confirmed 21 days ago
Retailer 5
-
$5,884 NZD
View
Price last confirmed 15 days ago
Retailer 6
-
$6,110 NZD
View
Price last confirmed 15 days ago
Retailer 7
-
$6,113 NZD
View
Price last confirmed 14 days ago
Retailer 8
-
$6,142 NZD
View
Price last confirmed 19 days ago
Retailer 9
-
$6,788 NZD
View
Price last confirmed 14 days ago
Retailer 10
-
$6,815 NZD
View
Price last confirmed 14 days ago
Retailer 11
-
$7,100 NZD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$9,074 NZD
View
Retailer 13
-
$9,891 NZD
View
Price last confirmed 16 days ago
Retailer 14
-
$10,250 NZD
View
Price last confirmed 17 days ago
Most Expensive
C
Allurez
5853908 · Nov 5
$17,190 NZD
$9,529 USD
View
14 more retailers have this diamond
Prices start from $9,074 NZDSave up to $8,116 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.

B
1.55ct Round
$9,074 NZD