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Round|Natural|GIA

4.25ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6541127304

Certificate GIA 6541127304

Diamond specifications and retailer prices

From HK$273,837 HKD
As of October 31, 2026
Save HK$195,898 HKD (42%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: HK$469,735 HKD 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 HK$273,837 to HK$469,735, a HK$195,898 spread on the same certified stone. MOH London lists it at HK$469,735. 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
Colour
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

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: Oct 31
Current: HK$469,735 HKD|Low: HK$273,837 HKD|High: HK$492,292 HKD|Avg: HK$347,851 HKD|-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 14HK$273,837 HKD
Retailer 13HK$274,480 HKD
Retailer 3HK$275,249 HKD
Retailer 2HK$280,395 HKD
Retailer 11HK$283,565 HKD
Retailer 4HK$291,277 HKD
Retailer 9HK$296,133 HKD
Retailer 8HK$298,243 HKD
Retailer 5HK$310,552 HKD
Retailer 10HK$321,645 HKD
Retailer 6HK$359,498 HKD
Retailer 7HK$362,911 HKD
Retailer 12HK$376,915 HKD
MOH LondonHK$469,735 HKD

36 data points across 14 retailers

23 retailersHK$273,837 HKD to HK$469,735 HKD

A
Cheapest Retailer
-
HK$273,837 HKD
A
Retailer 2
-
HK$274,480 HKD
View
A
Retailer 3
-
HK$275,249 HKD
View
A
Retailer 4
-
HK$280,395 HKD
View
A
Retailer 5
-
HK$283,565 HKD
View
A
Retailer 6
-
HK$291,277 HKD
View
B+
Retailer 7
-
HK$296,133 HKD
View
A
Retailer 8
-
HK$298,243 HKD
View
B+
Retailer 9
-
HK$310,552 HKD
View
Retailer 10
-
HK$311,462 HKD
View
Price last confirmed 21 days ago
B+
Retailer 11
-
HK$321,645 HKD
View
Retailer 12
-
HK$324,446 HKD
View
Price last confirmed 48 days ago
Retailer 13
-
HK$324,446 HKD
View
Price last confirmed 20 days ago
Retailer 14
-
HK$324,446 HKD
View
Price last confirmed 22 days ago
Retailer 15
-
HK$337,422 HKD
View
Price last confirmed 45 days ago
Retailer 16
-
HK$337,422 HKD
View
Price last confirmed 19 days ago
Retailer 17
-
HK$348,672 HKD
View
Price last confirmed 14 days ago
Retailer 18
-
HK$350,398 HKD
View
Price last confirmed 45 days ago
Retailer 19
-
HK$350,398 HKD
View
Price last confirmed 19 days ago
Retailer 20
-
HK$359,498 HKD
View
Price last confirmed 10 days ago
B+
Retailer 21
-
HK$362,911 HKD
View
B
Retailer 22
-
HK$376,915 HKD
View
Most Expensive
B
MOH London
5243C3FC5 · Nov 2
HK$469,735 HKD
£47,146 GBP
View
22 more retailers have this diamond
Prices start from HK$273,837 HKDSave up to HK$195,898 HKD

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
HK$273,837 HKD