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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 5423535519

Certificate GIA 5423535519

Diamond specifications and retailer prices

From $2,445 CAD
As of November 6, 2026
Save $3,950 CAD (62%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,395 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 very-good cut grade and certified by GIA 5423535519. Listed at 20 retailers as of November 5, 2026, with prices from $2,445 to $6,395, a $3,950 spread on the same certified stone. NZ Jewellers lists it at $6,395. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
J
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
Crown angle38.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 5423535519
Dimensions6.30 × 6.25 × 3.97 mm
L/W Ratio1.01
Top View
6.30 mm6.25 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5423535519
Side View
Table 57.0%Crown 38.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 63.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,564 CAD|Low: $2,197 CAD|High: $5,423 CAD|Avg: $3,501 CAD|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 7$2,503 CAD
Retailer 9$2,557 CAD
Retailer 8$2,577 CAD
Retailer 2$2,899 CAD
Retailer 5$3,303 CAD
Retailer 1$3,564 CAD
Retailer 4$3,733 CAD
Retailer 10$3,761 CAD
Retailer 3$3,878 CAD
Retailer 6$5,343 CAD

42 data points across 10 retailers

20 retailers$2,445 CAD to $6,395 CAD

B+
Cheapest Retailer
-
$2,445 CAD
B+
Retailer 2
-
$2,497 CAD
View
B+
Retailer 3
-
$2,503 CAD
View
B+
Retailer 4
-
$2,557 CAD
View
Final sale: no returns
B+
Retailer 5
-
$2,577 CAD
View
B+
Retailer 6
-
$2,606 CAD
View
Retailer 7
-
$2,771 CAD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$2,771 CAD
View
B
Retailer 9
-
$2,821 CAD
View
B+
Retailer 10
-
$2,899 CAD
View
B
Retailer 11
-
$3,166 CAD
View
B
Retailer 12
-
$3,197 CAD
View
B
Retailer 13
-
$3,303 CAD
View
B
Retailer 14
-
$3,522 CAD
View
B
Retailer 15
-
$3,564 CAD
View
B
Retailer 16
-
$3,733 CAD
View
Retailer 17
-
$3,761 CAD
View
Price last confirmed 31 days ago
B
Retailer 18
-
$3,878 CAD
View
B
Retailer 19
-
$5,343 CAD
View
Most Expensive
C
NZ Jewellers
9ae6d256-84b7-426f-a4bd-e2661672ff5a · Nov 5
$6,395 CAD
$4,579 USD
View
19 more retailers have this diamond
Prices start from $2,445 CADSave up to $3,950 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.

B+
1.00ct Round
$2,445 CAD