Round|Natural|GIA

1.00ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 1236581481

Certificate GIA 1236581481

Diamond specifications and retailer prices

From $3,369 CAD
$2,412 USD
As of October 30, 2026
Save $1,810 CAD (35%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $7,948 CAD at NZ Jewellers · As of September 27, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1236581481. Listed at 18 retailers as of October 30, 2026, with a 54% 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
E
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1236581481
Dimensions6.45 × 6.37 × 3.91 mm
L/W Ratio1.01
Star length55%
Lower girdle85%
Top View
6.45 mm6.37 mm1.00 ctE / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1236581481
Side View
Table 58.0%Crown 35°Girdle: Sli. ThickPavilion 40.8°Culet: NoneDepth 61.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $5,179 CAD|Low: $3,188 CAD|High: $7,722 CAD|Avg: $4,403 CAD|+15.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 3$3,369 CAD
Retailer 5$3,390 CAD
Retailer 9$3,496 CAD
Retailer 2$3,702 CAD
Retailer 8$3,922 CAD
Retailer 11$4,171 CAD
Retailer 6$4,203 CAD
Retailer 4$4,880 CAD
Retailer 1$5,179 CAD
Retailer 10$5,293 CAD
Retailer 7$7,701 CAD

37 data points across 11 retailers

18 retailers$3,369 CAD to $5,179 CAD

A
Cheapest Retailer
-
$3,369 CAD
$2,412 USD
A
Retailer 2
-
$3,390 CAD
$2,427 USD
View
A
Retailer 3
-
$3,587 CAD
A$3,951 AUD
View
Retailer 4
-
$3,702 CAD
$2,650 USD
View
Price last confirmed 24 days ago
A
Retailer 5
-
$3,922 CAD
$2,808 USD
View
A
Retailer 6
-
$3,954 CAD
View
Retailer 7
-
$4,133 CAD
$2,959 USD
View
Price last confirmed 23 days ago
Retailer 8
-
$4,133 CAD
$2,959 USD
View
Price last confirmed 23 days ago
Retailer 9
-
$4,171 CAD
$2,986 USD
View
Price last confirmed 24 days ago
B+
Retailer 10
-
$4,203 CAD
$3,009 USD
View
Retailer 11
-
$4,293 CAD
$3,073 USD
View
Price last confirmed 31 days ago
Retailer 12
-
$4,333 CAD
$3,102 USD
View
Price last confirmed 89 days ago
Retailer 13
-
$4,769 CAD
$3,414 USD
View
Price last confirmed 31 days ago
B+
Retailer 14
-
$4,880 CAD
€3,327 EUR
View
B
Retailer 15
-
$5,179 CAD
£2,920 GBP
View
Retailer 16
-
$5,293 CAD
$3,789 USD
View
Price last confirmed 23 days ago
Retailer 17
-
$7,701 CAD
£4,341 GBP
View
Price last confirmed 23 days ago
Most Expensive
NZ Jewellers
ccaa283b-e8da-4ed6-a203-eb9afb6e9e14 · Sep 27
$7,948 CAD
$5,690 USD
View
Price last confirmed 34 days ago
17 more retailers have this diamond
Prices start from $3,369 CADSave up to $1,810 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
$3,369 CAD