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4.51ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 7448789910

Certificate GIA 7448789910

Diamond specifications and retailer prices

From $57,995 CAD
As of November 4, 2026
Save $13,307 CAD (19%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $71,302 CAD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 4.51ct natural round diamond

This 4.51ct natural round sits in the three to five carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7448789910. Listed at 5 retailers as of November 4, 2026, with prices from $57,995 to $71,302, a $13,307 spread on the same certified stone. 77 Diamonds lists it at $71,302. 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

4.51
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 7448789910
Dimensions10.59 × 10.52 × 6.48 mm
L/W Ratio1.01
Top View
10.59 mm10.52 mm4.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7448789910
Side View
Table 61.0%Crown 33°Girdle: Slightly ThickPavilion 41.6°Culet: NoneDepth 61.6%

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 4
Current: $71,302 CAD|Low: $57,995 CAD|High: $78,160 CAD|Avg: $63,702 CAD|-6.8%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 3$57,995 CAD
Retailer 2$58,340 CAD
Retailer 4$59,146 CAD
Retailer 5$61,284 CAD
77 Diamonds$71,302 CAD

33 data points across 5 retailers

5 retailers$57,995 CAD to $71,302 CAD

B+
Cheapest Retailer
-
$57,995 CAD
Retailer 2
-
$58,340 CAD
View
Price last confirmed 9 days ago
B+
Retailer 3
-
$59,146 CAD
View
B+
Retailer 4
-
$61,284 CAD
View
Most Expensive
B
77 Diamonds
RBZCNEAG6VM · Nov 6
$71,302 CAD
£40,200 GBP
View
4 more retailers have this diamond
Prices start from $57,995 CADSave up to $13,307 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+
4.51ct Round
$57,995 CAD