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Round|Natural|GIA

1.00ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6305896366

Certificate GIA 6305896366

Diamond specifications and retailer prices

From $1,788 CAD
As of November 4, 2026
Save $4,070 CAD (69%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,857 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6305896366. Listed at 17 retailers as of November 4, 2026, with prices from $1,788 to $5,857, a $4,070 spread on the same certified stone. NZ Jewellers lists it at $5,857. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6305896366
Dimensions6.40 × 6.34 × 3.94 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.40 mm6.34 mm1.00 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6305896366
Side View
Table 59.0%Crown 36°Girdle: ThickPavilion 40.6°Culet: NoneDepth 61.8%

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 4
Current: $2,297 CAD|Low: $1,769 CAD|High: $4,258 CAD|Avg: $2,562 CAD|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$1,788 CAD
Retailer 8$2,106 CAD
Retailer 2$2,188 CAD
Retailer 11$2,216 CAD
Retailer 10$2,249 CAD
Retailer 1$2,297 CAD
Retailer 4$2,494 CAD
Retailer 3$2,512 CAD
Retailer 6$2,649 CAD
Retailer 5$3,031 CAD
Retailer 7$4,195 CAD

41 data points across 11 retailers

17 retailers$1,788 CAD to $5,857 CAD

A
Cheapest Retailer
-
$1,788 CAD
A
Retailer 2
-
$2,106 CAD
View
A
Retailer 3
-
$2,188 CAD
View
A
Retailer 4
-
$2,216 CAD
View
Final sale: no returns
A
Retailer 5
-
$2,249 CAD
View
A
Retailer 6
-
$2,297 CAD
View
Retailer 7
-
$2,402 CAD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$2,402 CAD
View
B+
Retailer 9
-
$2,494 CAD
View
B+
Retailer 10
-
$2,512 CAD
View
B+
Retailer 11
-
$2,533 CAD
View
B+
Retailer 12
-
$2,592 CAD
View
B+
Retailer 13
-
$2,649 CAD
View
B+
Retailer 14
-
$2,771 CAD
View
B+
Retailer 15
-
$3,031 CAD
View
B
Retailer 16
-
$4,195 CAD
View
Most Expensive
C
NZ Jewellers
184be088-16c0-4203-b2fc-8cb6bf618a2b · Nov 5
$5,857 CAD
$4,194 USD
View
16 more retailers have this diamond
Prices start from $1,788 CADSave up to $4,070 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
$1,788 CAD