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Round|Natural|GIA

1.03ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2566647312

Certificate GIA 2566647312

Diamond specifications and retailer prices

From $2,620 CAD
As of November 4, 2026
Save $2,128 CAD (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,748 CAD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.03ct natural round diamond

This 1.03ct 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 2566647312. Listed at 15 retailers as of November 4, 2026, with prices from $2,620 to $4,748, a $2,128 spread on the same certified stone. Helzberg Diamonds lists it at $4,748. 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

1.03
Carat
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2566647312
Dimensions6.46 × 6.49 × 4.01 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.46 mm6.49 mm1.03 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2566647312
Side View
Table 58.0%Crown 34°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 61.9%

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: $4,748 CAD|Low: $2,620 CAD|High: $5,081 CAD|Avg: $3,449 CAD|-6.5%
Helzberg Diamonds
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
November 6, 2026
Retailer 5$2,620 CAD
Retailer 11$2,694 CAD
Retailer 4$2,725 CAD
Retailer 10$2,761 CAD
Retailer 7$2,811 CAD
Retailer 2$2,863 CAD
Retailer 6$2,877 CAD
Retailer 14$2,885 CAD
Retailer 12$3,159 CAD
Retailer 13$3,391 CAD
Retailer 15$3,440 CAD
Retailer 9$3,804 CAD
Retailer 8$4,039 CAD
Retailer 3$4,433 CAD
Helzberg Diamonds$4,748 CAD

20 data points across 15 retailers

15 retailers$2,620 CAD to $4,748 CAD

A
Cheapest Retailer
-
$2,620 CAD
B+
Retailer 2
-
$2,694 CAD
View
B+
Retailer 3
-
$2,725 CAD
View
B+
Retailer 4
-
$2,761 CAD
View
B+
Retailer 5
-
$2,811 CAD
View
B+
Retailer 6
-
$2,863 CAD
View
B+
Retailer 7
-
$2,877 CAD
View
B+
Retailer 8
-
$2,885 CAD
View
B+
Retailer 9
-
$3,159 CAD
View
B+
Retailer 10
-
$3,391 CAD
View
B
Retailer 11
-
$3,440 CAD
View
B+
Retailer 12
-
$3,804 CAD
View
B
Retailer 13
-
$4,039 CAD
View
B
Retailer 14
-
$4,433 CAD
View
Most Expensive
B
Helzberg Diamonds
XZRILMMMKNJHI · Nov 6
$4,748 CAD
$3,400 USD
View
14 more retailers have this diamond
Prices start from $2,620 CADSave up to $2,128 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
1.03ct Round
$2,620 CAD