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1.51ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 713545321

Shape and cutting style on the report: Round brilliant

Certificate IGI 713545321

Diamond specifications and retailer prices

From $3,583 CAD
$2,565 USD
As of October 30, 2026
Save $4,779 CAD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $8,362 CAD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct 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 713545321. Listed at 20 retailers as of October 30, 2026, with prices from $3,583 to $8,362, a $4,779 spread on the same certified stone. NZ Jewellers lists it at $8,362. 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

1.51
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.6°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 713545321
Dimensions7.30 × 7.18 × 4.59 mm
L/W Ratio1.02
Girdle conditionPARTLY FACETED
Culet sizePointed
Top View
7.30 mm7.18 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 713545321
Side View
Table 57.0%Crown 36.6°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.2%

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: Oct 30
Current: $8,362 CAD|Low: $3,383 CAD|High: $8,362 CAD|Avg: $4,787 CAD
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
October 31, 2026
Retailer 15$3,583 CAD
Retailer 14$3,691 CAD
Retailer 5$3,712 CAD
Retailer 3$3,918 CAD
Retailer 7$3,999 CAD
Retailer 4$4,153 CAD
Retailer 2$4,327 CAD
Retailer 13$4,388 CAD
Retailer 6$4,615 CAD
Retailer 12$4,675 CAD
Retailer 8$4,683 CAD
Retailer 9$4,792 CAD
Retailer 10$4,870 CAD
Retailer 11$6,697 CAD
NZ Jewellers$8,362 CAD

41 data points across 15 retailers

20 retailers$3,583 CAD to $8,362 CAD

A
Cheapest Retailer
-
$3,583 CAD
$2,565 USD
A
Retailer 2
-
$3,691 CAD
$2,642 USD
View
Final sale: no returns
A
Retailer 3
-
$3,712 CAD
$2,657 USD
View
Retailer 4
-
$3,812 CAD
$2,729 USD
View
Price last confirmed 82 days ago
A
Retailer 5
-
$3,918 CAD
$2,805 USD
View
Retailer 6
-
$3,999 CAD
$2,863 USD
View
Price last confirmed 35 days ago
A
Retailer 7
-
$3,999 CAD
$2,863 USD
View
A
Retailer 8
-
$4,153 CAD
$2,973 USD
View
A
Retailer 9
-
$4,198 CAD
$3,005 USD
View
A
Retailer 10
-
$4,327 CAD
£2,439 GBP
View
B+
Retailer 11
-
$4,388 CAD
$3,141 USD
View
B+
Retailer 12
-
$4,615 CAD
$3,304 USD
View
Retailer 13
-
$4,615 CAD
$3,304 USD
View
Price last confirmed 39 days ago
B+
Retailer 14
-
$4,675 CAD
£2,635 GBP
View
A
Retailer 15
-
$4,683 CAD
€3,193 EUR
View
A
Retailer 16
-
$4,792 CAD
£2,701 GBP
View
A
Retailer 17
-
$4,870 CAD
ZAR 56,326 ZAR
View
B+
Retailer 18
-
$6,697 CAD
£3,775 GBP
View
Retailer 19
-
$8,362 CAD
$5,986 USD
View
Price last confirmed 35 days ago
Most Expensive
B
NZ Jewellers
d4139d59-90a1-44fe-8074-bf5e2509c708 · Oct 30
$8,362 CAD
$5,986 USD
View
19 more retailers have this diamond
Prices start from $3,583 CADSave up to $4,779 CAD

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
1.51ct Round
$3,583 CAD