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Round|Natural|IGI

4.01ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 605300501

Certificate IGI 605300501

Diamond specifications and retailer prices

From $20,667 SGD
As of November 5, 2026
Save $15,511 SGD (43%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $36,178 SGD 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 $20,667 to $36,178, a $15,511 spread on the same certified stone. MOH London lists it at $36,178. 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 5
Current: $36,178 SGD|Low: $20,667 SGD|High: $36,711 SGD|Avg: $26,343 SGD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 4$20,667 SGD
Retailer 6$23,570 SGD
Retailer 2$24,117 SGD
Retailer 7$24,436 SGD
Retailer 5$25,029 SGD
Retailer 8$26,920 SGD
Retailer 3$27,965 SGD
MOH London$36,178 SGD

40 data points across 8 retailers

13 retailers$20,667 SGD to $36,178 SGD

A
Cheapest Retailer
-
$20,667 SGD
A
Retailer 2
-
$23,570 SGD
View
A
Retailer 3
-
$24,117 SGD
View
Retailer 4
-
$24,364 SGD
View
Price last confirmed 72 days ago
A
Retailer 5
-
$25,029 SGD
View
Retailer 6
-
$25,638 SGD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$26,920 SGD
View
A
Retailer 8
-
$27,775 SGD
View
A
Retailer 9
-
$27,965 SGD
View
B+
Retailer 10
-
$28,504 SGD
View
B+
Retailer 11
-
$28,843 SGD
View
B+
Retailer 12
-
$32,905 SGD
View
Most Expensive
B+
MOH London
2EF3E7210 · Nov 4
$36,178 SGD
£22,302 GBP
View
12 more retailers have this diamond
Prices start from $20,667 SGDSave up to $15,511 SGD

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
$20,667 SGD