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 $3,373 USD
As of November 4, 2026
Save $3,248 USD (49%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,621 USD 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 $3,373 to $6,621, a $3,248 spread on the same certified stone. NZ Jewellers lists it at $6,621. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $6,621 USD|Low: $3,373 USD|High: $6,960 USD|Avg: $4,315 USD
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$3,373 USD
Retailer 14$3,420 USD
Retailer 5$3,508 USD
Retailer 8$3,521 USD
Retailer 4$3,635 USD
Retailer 6$3,800 USD
Retailer 16$3,800 USD
Retailer 15$3,946 USD
Retailer 9$3,981 USD
Retailer 11$4,368 USD
Retailer 3$4,385 USD
Retailer 12$4,415 USD
Retailer 2$4,514 USD
Retailer 10$4,638 USD
Retailer 13$6,338 USD
NZ Jewellers$6,621 USD

36 data points across 16 retailers

16 retailers$3,373 USD to $6,621 USD

A
Cheapest Retailer
-
$3,373 USD
A
Retailer 2
-
$3,420 USD
View
A
Retailer 3
-
$3,508 USD
View
Final sale: no returns
A
Retailer 4
-
$3,521 USD
View
A
Retailer 5
-
$3,635 USD
View
B+
Retailer 6
-
$3,800 USD
View
Retailer 7
-
$3,800 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$3,946 USD
View
A
Retailer 9
-
$3,981 USD
View
B+
Retailer 10
-
$4,368 USD
View
B+
Retailer 11
-
$4,385 USD
View
B+
Retailer 12
-
$4,415 USD
View
B+
Retailer 13
-
$4,514 USD
View
B+
Retailer 14
-
$4,638 USD
View
B
Retailer 15
-
$6,338 USD
View
Most Expensive
B
NZ Jewellers
e9241f48-9b2c-4d57-a740-646cbf1c56e5 · Nov 5
$6,621 USD
View
15 more retailers have this diamond
Prices start from $3,373 USDSave up to $3,248 USD

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
$3,373 USD