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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 €31,099 EUR
As of October 31, 2026
Save €22,247 EUR (42%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €53,346 EUR 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 €31,099 to €53,346, a €22,247 spread on the same certified stone. MOH London lists it at €53,346. 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

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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: €53,346 EUR|Low: €31,099 EUR|High: €55,908 EUR|Avg: €39,504 EUR|-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€31,099 EUR
Retailer 13€31,172 EUR
Retailer 3€31,259 EUR
Retailer 2€31,843 EUR
Retailer 11€32,203 EUR
Retailer 4€33,079 EUR
Retailer 9€33,631 EUR
Retailer 8€33,870 EUR
Retailer 5€35,268 EUR
Retailer 10€36,528 EUR
Retailer 6€40,827 EUR
Retailer 7€41,214 EUR
Retailer 12€42,805 EUR
MOH London€53,346 EUR

36 data points across 14 retailers

23 retailers€31,099 EUR to €53,346 EUR

A
Cheapest Retailer
-
€31,099 EUR
A
Retailer 2
-
€31,172 EUR
View
A
Retailer 3
-
€31,259 EUR
View
A
Retailer 4
-
€31,843 EUR
View
A
Retailer 5
-
€32,203 EUR
View
A
Retailer 6
-
€33,079 EUR
View
B+
Retailer 7
-
€33,631 EUR
View
A
Retailer 8
-
€33,870 EUR
View
B+
Retailer 9
-
€35,268 EUR
View
Retailer 10
-
€35,372 EUR
View
Price last confirmed 21 days ago
B+
Retailer 11
-
€36,528 EUR
View
Retailer 12
-
€36,846 EUR
View
Price last confirmed 48 days ago
Retailer 13
-
€36,846 EUR
View
Price last confirmed 20 days ago
Retailer 14
-
€36,846 EUR
View
Price last confirmed 22 days ago
Retailer 15
-
€38,320 EUR
View
Price last confirmed 45 days ago
Retailer 16
-
€38,320 EUR
View
Price last confirmed 19 days ago
Retailer 17
-
€39,597 EUR
View
Price last confirmed 14 days ago
Retailer 18
-
€39,793 EUR
View
Price last confirmed 45 days ago
Retailer 19
-
€39,793 EUR
View
Price last confirmed 19 days ago
Retailer 20
-
€40,827 EUR
View
Price last confirmed 10 days ago
B+
Retailer 21
-
€41,214 EUR
View
B
Retailer 22
-
€42,805 EUR
View
Most Expensive
B
MOH London
5243C3FC5 · Nov 2
€53,346 EUR
£47,146 GBP
View
22 more retailers have this diamond
Prices start from €31,099 EURSave up to €22,247 EUR

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
€31,099 EUR