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Round|Natural|GIA

1.00ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1435831747

Certificate GIA 1435831747

Diamond specifications and retailer prices

From $4,050 CAD
As of November 4, 2026
Save $5,904 CAD (59%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $9,954 CAD at Diamond Quarter · As of November 6, 2026
View at Diamond Quarter

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 1435831747. Listed at 28 retailers as of November 4, 2026, with prices from $4,050 to $9,954, a $5,904 spread on the same certified stone. Diamond Quarter lists it at $9,954. 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
SymmetryVery Good
FluorescenceMedium
Crown angle33°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1435831747
Dimensions6.55 × 6.47 × 3.82 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Key to symbols
Crystal, Feather, Cavity, Needle, Natural
Top View
6.55 mm6.47 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1435831747
Side View
Table 61.0%Crown 33°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 58.6%

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: $5,915 CAD|Low: $3,747 CAD|High: $9,392 CAD|Avg: $5,564 CAD|+5.6%
Retailer 1
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Retailer 19
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Retailer 21
Retailer 22
Retailer 23
Retailer 24
November 5, 2026
Retailer 5$4,050 CAD
Retailer 6$4,141 CAD
Retailer 20$4,232 CAD
Retailer 11$4,335 CAD
Retailer 16$4,426 CAD
Retailer 13$4,507 CAD
Retailer 7$4,700 CAD
Retailer 3$4,884 CAD
Retailer 8$4,884 CAD
Retailer 4$5,071 CAD
Retailer 21$5,311 CAD
Retailer 19$5,426 CAD
Retailer 17$5,557 CAD
Retailer 10$5,635 CAD
Retailer 23$5,642 CAD
Retailer 24$5,642 CAD
Retailer 14$5,799 CAD
Retailer 2$5,824 CAD
Retailer 1$5,915 CAD
Retailer 15$6,103 CAD
Retailer 18$6,198 CAD
Retailer 12$6,579 CAD
Retailer 22$9,015 CAD
Retailer 9$9,392 CAD

37 data points across 24 retailers

28 retailers$4,050 CAD to $9,954 CAD

A
Cheapest Retailer
-
$4,050 CAD
A
Retailer 2
-
$4,141 CAD
View
A
Retailer 3
-
$4,232 CAD
View
B+
Retailer 4
-
$4,335 CAD
View
B+
Retailer 5
-
$4,426 CAD
View
B+
Retailer 6
-
$4,487 CAD
View
B+
Retailer 7
-
$4,507 CAD
View
Final sale: no returns
B+
Retailer 8
-
$4,700 CAD
View
Retailer 9
-
$4,884 CAD
View
Price last confirmed 15 days ago
Retailer 10
-
$4,884 CAD
View
Price last confirmed 13 days ago
Retailer 11
-
$5,071 CAD
View
Price last confirmed 15 days ago
Retailer 12
-
$5,110 CAD
View
Price last confirmed 25 days ago
B+
Retailer 13
-
$5,311 CAD
View
Retailer 14
-
$5,311 CAD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
$5,426 CAD
View
Retailer 16
-
$5,557 CAD
View
Price last confirmed 29 days ago
Retailer 17
-
$5,635 CAD
View
Price last confirmed 14 days ago
B
Retailer 18
-
$5,642 CAD
View
B
Retailer 19
-
$5,642 CAD
View
B+
Retailer 20
-
$5,799 CAD
View
B+
Retailer 21
-
$5,824 CAD
View
B+
Retailer 22
-
$5,915 CAD
View
Retailer 23
-
$6,103 CAD
View
Price last confirmed 14 days ago
B+
Retailer 24
-
$6,198 CAD
View
B
Retailer 25
-
$6,579 CAD
View
B
Retailer 26
-
$9,015 CAD
View
Retailer 27
-
$9,392 CAD
View
Price last confirmed 14 days ago
Most Expensive
B
Diamond Quarter
1.0SI1D1447F491N · Nov 6
$9,954 CAD
£5,612 GBP
View
27 more retailers have this diamond
Prices start from $4,050 CADSave up to $5,904 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
$4,050 CAD