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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 $7,321 AUD
As of November 6, 2026
Save $6,548 AUD (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $13,869 AUD 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 $7,321 to $13,869, a $6,548 spread on the same certified stone. Allurez lists it at $13,869. 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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Price History

Last verified: Nov 6
Current: $13,869 AUD|Low: $4,015 AUD|High: $13,869 AUD|Avg: $5,430 AUD
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$4,293 AUD
Retailer 7$4,355 AUD
Retailer 14$4,381 AUD
Retailer 8$4,599 AUD
Retailer 4$4,748 AUD
Retailer 6$4,748 AUD
Retailer 16$4,929 AUD
Retailer 2$4,932 AUD
Retailer 3$5,477 AUD
Retailer 11$5,499 AUD
Retailer 10$5,522 AUD
Retailer 9$5,728 AUD
Retailer 15$5,737 AUD
Retailer 13$7,980 AUD
Retailer 5$8,270 AUD
Allurez$13,869 AUD

30 data points across 16 retailers

15 retailers$7,321 AUD to $13,869 AUD

Retailer 1
-
$4,293 AUD
Price last confirmed 19 days ago
Retailer 2
-
$4,355 AUD
View
Price last confirmed 14 days ago
Retailer 3
-
$4,599 AUD
View
Price last confirmed 14 days ago
Retailer 4
-
$4,748 AUD
View
Price last confirmed 21 days ago
Retailer 5
-
$4,748 AUD
View
Price last confirmed 15 days ago
Retailer 6
-
$4,929 AUD
View
Price last confirmed 15 days ago
Retailer 7
-
$4,932 AUD
View
Price last confirmed 14 days ago
Retailer 8
-
$4,956 AUD
View
Price last confirmed 19 days ago
Retailer 9
-
$5,477 AUD
View
Price last confirmed 14 days ago
Retailer 10
-
$5,499 AUD
View
Price last confirmed 14 days ago
Retailer 11
-
$5,728 AUD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$7,321 AUD
View
Retailer 13
-
$7,980 AUD
View
Price last confirmed 16 days ago
Retailer 14
-
$8,270 AUD
View
Price last confirmed 17 days ago
Most Expensive
C
Allurez
5853908 · Nov 5
$13,869 AUD
$9,529 USD
View
14 more retailers have this diamond
Prices start from $7,321 AUDSave up to $6,548 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.

B
1.55ct Round
$7,321 AUD