Round|Natural|IGI

4.01ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 605300501

Certificate IGI 605300501

Diamond specifications and retailer prices

From €14,358 EUR
As of November 6, 2026
Save €10,877 EUR (43%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €25,235 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 4.01ct natural round diamond

This 4.01ct 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 IGI 605300501. Listed at 13 retailers as of November 4, 2026, with prices from €14,358 to €25,235, a €10,877 spread on the same certified stone. MOH London lists it at €25,235. 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

4.01
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 605300501
Dimensions10.09 × 10.02 × 6.35 mm
L/W Ratio1.01
Top View
10.09 mm10.02 mm4.01 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 605300501
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.1%

Caratlytics Score

How it works →
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: Nov 6
Current: €25,235 EUR|Low: €14,358 EUR|High: €25,607 EUR|Avg: €18,385 EUR|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2€14,358 EUR
Retailer 6€16,441 EUR
Retailer 3€16,822 EUR
Retailer 7€17,045 EUR
Retailer 5€17,458 EUR
Retailer 8€18,778 EUR
Retailer 4€19,506 EUR
MOH London€25,235 EUR

40 data points across 8 retailers

13 retailers€14,358 EUR to €25,235 EUR

A
Cheapest Retailer
-
€14,358 EUR
A
Retailer 2
-
€16,441 EUR
View
A
Retailer 3
-
€16,822 EUR
View
Retailer 4
-
€16,995 EUR
View
Price last confirmed 72 days ago
A
Retailer 5
-
€17,458 EUR
View
Retailer 6
-
€17,883 EUR
View
Price last confirmed 8 days ago
A
Retailer 7
-
€18,778 EUR
View
A
Retailer 8
-
€19,374 EUR
View
A
Retailer 9
-
€19,506 EUR
View
B+
Retailer 10
-
€19,882 EUR
View
B+
Retailer 11
-
€20,119 EUR
View
B+
Retailer 12
-
€22,952 EUR
View
Most Expensive
B+
MOH London
2EF3E7210 · Nov 4
€25,235 EUR
£22,302 GBP
View
12 more retailers have this diamond
Prices start from €14,358 EURSave up to €10,877 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
4.01ct Round
€14,358 EUR