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Round|Natural|GIA

1.00ct J SI1 Round Natural Diamond

VG • J/SI1 • GIA 2554975138

Certificate GIA 2554975138

Diamond specifications and retailer prices

From $2,145 CAD
As of November 1, 2026
Save $2,924 CAD (58%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,050 CAD at NZ Jewellers · As of October 30, 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 2554975138. Listed at 20 retailers as of November 1, 2026, with a 136% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle33.5°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 2554975138
Dimensions6.33 × 6.37 × 3.92 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.33 mm6.37 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2554975138
Side View
Table 54.0%Crown 33.5°Girdle: STK-THKPavilion 39.8°Culet: NoneDepth 61.7%

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 1
Current: $6,050 CAD|Low: $2,056 CAD|High: $6,792 CAD|Avg: $3,176 CAD|+1.0%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 2, 2026
Retailer 19$2,145 CAD
Retailer 14$2,193 CAD
Retailer 16$2,542 CAD
Retailer 7$2,668 CAD
Retailer 5$2,672 CAD
Retailer 6$2,758 CAD
Retailer 4$2,764 CAD
Retailer 10$2,785 CAD
Retailer 3$2,788 CAD
Retailer 12$2,871 CAD
Retailer 18$2,894 CAD
Retailer 11$2,913 CAD
Retailer 13$3,156 CAD
Retailer 20$3,161 CAD
Retailer 8$3,212 CAD
Retailer 9$3,390 CAD
Retailer 15$3,529 CAD
Retailer 2$3,683 CAD
Retailer 17$5,070 CAD
NZ Jewellers$6,050 CAD

23 data points across 20 retailers

20 retailers$2,145 CAD to $5,070 CAD

A
Cheapest Retailer
-
$2,145 CAD
A
Retailer 2
-
$2,193 CAD
View
B+
Retailer 3
-
$2,542 CAD
View
Retailer 4
-
$2,668 CAD
View
Price last confirmed 6 days ago
B+
Retailer 5
-
$2,758 CAD
View
B+
Retailer 6
-
$2,764 CAD
View
Retailer 7
-
$2,785 CAD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$2,788 CAD
View
Retailer 9
-
$2,871 CAD
View
Price last confirmed 10 days ago
B+
Retailer 10
-
$2,894 CAD
View
Retailer 11
-
$2,913 CAD
View
Price last confirmed 8 days ago
B
Retailer 12
-
$3,156 CAD
View
B
Retailer 13
-
$3,161 CAD
View
Retailer 14
-
$3,212 CAD
View
Price last confirmed 10 days ago
Retailer 15
-
$3,390 CAD
View
Price last confirmed 11 days ago
B
Retailer 16
-
$3,529 CAD
View
Retailer 17
-
$3,549 CAD
View
Price last confirmed 37 days ago
B
Retailer 18
-
$3,683 CAD
View
B
Retailer 19
-
$5,070 CAD
View
Most Expensive
NZ Jewellers
a148374b-b900-4dbc-83f0-c2e03d05ae8b · Oct 30
$6,050 CAD
$4,332 USD
View
Price last confirmed 7 days ago
19 more retailers have this diamond
Prices start from $2,145 CADSave up to $2,924 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
$2,145 CAD