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1.00ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2506134651

Shape and cutting style on the report: Round brilliant

Certificate GIA 2506134651

Diamond specifications and retailer prices

From $2,563 CAD
As of November 6, 2026
Save $4,860 CAD (65%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,423 CAD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2506134651. Listed at 21 retailers as of November 5, 2026, with prices from $2,563 to $7,423, a $4,860 spread on the same certified stone. NZ Jewellers lists it at $7,423. 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

1.00
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2506134651
Dimensions6.39 × 6.35 × 3.99 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.39 mm6.35 mm1.00 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2506134651
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

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 6
Current: $2,563 CAD|Low: $2,563 CAD|High: $6,294 CAD|Avg: $3,796 CAD|-3.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1$2,563 CAD
Retailer 7$2,609 CAD
Retailer 8$3,208 CAD
Retailer 9$3,276 CAD
Retailer 2$3,350 CAD
Retailer 3$3,735 CAD
Retailer 6$4,014 CAD
Retailer 4$4,334 CAD
Retailer 5$6,204 CAD

29 data points across 9 retailers

21 retailers$2,563 CAD to $7,423 CAD

A
Cheapest Retailer
-
$2,563 CAD
B+
Retailer 2
-
$2,609 CAD
View
B+
Retailer 3
-
$3,107 CAD
View
B+
Retailer 4
-
$3,113 CAD
View
B+
Retailer 5
-
$3,208 CAD
View
Retailer 6
-
$3,236 CAD
View
Price last confirmed 82 days ago
B
Retailer 7
-
$3,276 CAD
View
Final sale: no returns
B+
Retailer 8
-
$3,350 CAD
View
B+
Retailer 9
-
$3,519 CAD
View
B+
Retailer 10
-
$3,550 CAD
View
B
Retailer 11
-
$3,617 CAD
View
B
Retailer 12
-
$3,715 CAD
View
B+
Retailer 13
-
$3,735 CAD
View
B
Retailer 14
-
$3,746 CAD
View
Retailer 15
-
$3,978 CAD
View
Price last confirmed 30 days ago
B
Retailer 16
-
$4,014 CAD
View
B
Retailer 17
-
$4,096 CAD
View
B
Retailer 18
-
$4,334 CAD
View
B
Retailer 19
-
$4,864 CAD
View
B
Retailer 20
-
$6,204 CAD
View
Most Expensive
B
NZ Jewellers
8b7bb6df-972d-41c2-b5d1-2a135753b617 · Nov 5
$7,423 CAD
$5,315 USD
View
20 more retailers have this diamond
Prices start from $2,563 CADSave up to $4,860 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
1.00ct Round
$2,563 CAD