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Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1558301284

Certificate GIA 1558301284

Diamond specifications and retailer prices

From $4,039 CAD
As of November 4, 2026
Save $4,903 CAD (55%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $9,315 CAD at NZ Jewellers · As of September 21, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1558301284. Listed at 24 retailers as of November 2, 2026, with a 121% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1558301284
Dimensions6.31 × 6.37 × 3.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Natural
Top View
6.31 mm6.37 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558301284
Side View
Table 58.0%Crown 35°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.0%

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: $4,705 CAD|Low: $4,039 CAD|High: $9,037 CAD|Avg: $5,878 CAD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 9$4,039 CAD
Retailer 6$4,218 CAD
Retailer 1$4,705 CAD
Retailer 2$4,811 CAD
Retailer 11$4,936 CAD
Retailer 5$5,434 CAD
Retailer 3$5,733 CAD
Retailer 4$6,233 CAD
Retailer 8$6,572 CAD
Retailer 10$8,149 CAD
Retailer 7$8,942 CAD

33 data points across 11 retailers

24 retailers$4,039 CAD to $8,942 CAD

A
Cheapest Retailer
-
$4,039 CAD
A
Retailer 2
-
$4,218 CAD
View
B+
Retailer 3
-
$4,705 CAD
View
Retailer 4
-
$4,793 CAD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$4,811 CAD
View
B+
Retailer 6
-
$4,908 CAD
View
B+
Retailer 7
-
$4,909 CAD
View
B+
Retailer 8
-
$4,936 CAD
View
Final sale: no returns
Retailer 9
-
$5,086 CAD
View
Price last confirmed 11 days ago
Retailer 10
-
$5,348 CAD
View
Price last confirmed 29 days ago
Retailer 11
-
$5,348 CAD
View
Price last confirmed 44 days ago
B+
Retailer 12
-
$5,363 CAD
View
B+
Retailer 13
-
$5,434 CAD
View
B+
Retailer 14
-
$5,551 CAD
View
Retailer 15
-
$5,553 CAD
View
Price last confirmed 38 days ago
Retailer 16
-
$5,733 CAD
View
Price last confirmed 33 days ago
Retailer 17
-
$6,170 CAD
View
Price last confirmed 38 days ago
Retailer 18
-
$6,170 CAD
View
Price last confirmed 45 days ago
B+
Retailer 19
-
$6,233 CAD
View
B+
Retailer 20
-
$6,572 CAD
View
Retailer 21
-
$8,149 CAD
View
Price last confirmed 9 days ago
B
Retailer 22
-
$8,942 CAD
View
Retailer 23
-
$9,315 CAD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
2a98d147-13bb-42ca-b8ab-d57a36d34597 · Sep 21
$9,315 CAD
$6,670 USD
View
Price last confirmed 45 days ago
23 more retailers have this diamond
Prices start from $4,039 CADSave up to $4,903 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
$4,039 CAD