Round|Natural|GIA

4.25ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6541127304

Certificate GIA 6541127304

Diamond specifications and retailer prices

From $48,748 CAD
As of October 31, 2026
Save $34,874 CAD (42%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $83,622 CAD at MOH London · As of November 2, 2026
View at MOH London

About this 4.25ct natural round diamond

This 4.25ct 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 6541127304. Listed at 23 retailers as of October 31, 2026, with prices from $48,748 to $83,622, a $34,874 spread on the same certified stone. MOH London lists it at $83,622. 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

4.25
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 6541127304
Dimensions10.40 × 10.31 × 6.40 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
10.40 mm10.31 mm4.25 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6541127304
Side View
Table 60.0%Crown 33°Girdle: Slightly ThickPavilion 41.8°Culet: NoneDepth 61.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $83,622 CAD|Low: $48,748 CAD|High: $87,638 CAD|Avg: $61,924 CAD|-4.3%
MOH London
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
November 5, 2026
Retailer 14$48,748 CAD
Retailer 13$48,863 CAD
Retailer 3$49,000 CAD
Retailer 2$49,916 CAD
Retailer 11$50,480 CAD
Retailer 4$51,853 CAD
Retailer 9$52,717 CAD
Retailer 8$53,093 CAD
Retailer 5$55,284 CAD
Retailer 10$57,259 CAD
Retailer 6$63,998 CAD
Retailer 7$64,605 CAD
Retailer 12$67,098 CAD
MOH London$83,622 CAD

36 data points across 14 retailers

23 retailers$48,748 CAD to $83,622 CAD

A
Cheapest Retailer
-
$48,748 CAD
A
Retailer 2
-
$48,863 CAD
View
A
Retailer 3
-
$49,000 CAD
View
A
Retailer 4
-
$49,916 CAD
View
A
Retailer 5
-
$50,480 CAD
View
A
Retailer 6
-
$51,853 CAD
View
B+
Retailer 7
-
$52,717 CAD
View
A
Retailer 8
-
$53,093 CAD
View
B+
Retailer 9
-
$55,284 CAD
View
Retailer 10
-
$55,446 CAD
View
Price last confirmed 21 days ago
B+
Retailer 11
-
$57,259 CAD
View
Retailer 12
-
$57,758 CAD
View
Price last confirmed 48 days ago
Retailer 13
-
$57,758 CAD
View
Price last confirmed 20 days ago
Retailer 14
-
$57,758 CAD
View
Price last confirmed 22 days ago
Retailer 15
-
$60,068 CAD
View
Price last confirmed 45 days ago
Retailer 16
-
$60,068 CAD
View
Price last confirmed 19 days ago
Retailer 17
-
$62,070 CAD
View
Price last confirmed 14 days ago
Retailer 18
-
$62,378 CAD
View
Price last confirmed 45 days ago
Retailer 19
-
$62,378 CAD
View
Price last confirmed 19 days ago
Retailer 20
-
$63,998 CAD
View
Price last confirmed 10 days ago
B+
Retailer 21
-
$64,605 CAD
View
B
Retailer 22
-
$67,098 CAD
View
Most Expensive
B
MOH London
5243C3FC5 · Nov 2
$83,622 CAD
£47,146 GBP
View
22 more retailers have this diamond
Prices start from $48,748 CADSave up to $34,874 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
4.25ct Round
$48,748 CAD