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Round|Natural|GIA

4.01ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1543001587

Certificate GIA 1543001587

Diamond specifications and retailer prices

From $49,942 AUD
As of November 6, 2026
Save $31,191 AUD (38%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $81,133 AUD 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 GIA 1543001587. Listed at 13 retailers as of November 4, 2026, with prices from $49,942 to $81,133, a $31,191 spread on the same certified stone. MOH London lists it at $81,133. 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 angle33.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1543001587
Dimensions10.17 × 10.10 × 6.26 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather
Top View
10.17 mm10.10 mm4.01 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1543001587
Side View
Table 62.0%Crown 33.5°Girdle: ThickPavilion 41.8°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $81,133 AUD|Low: $48,236 AUD|High: $81,786 AUD|Avg: $56,783 AUD|+8.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 4$48,832 AUD
Retailer 10$49,942 AUD
Retailer 2$51,767 AUD
Retailer 3$52,119 AUD
Retailer 7$52,209 AUD
Retailer 12$53,000 AUD
Retailer 9$55,180 AUD
Retailer 8$57,303 AUD
Retailer 11$59,051 AUD
Retailer 5$61,201 AUD
Retailer 6$62,098 AUD
MOH London$81,133 AUD

32 data points across 12 retailers

13 retailers$49,942 AUD to $81,133 AUD

B+
Cheapest Retailer
-
$49,942 AUD
Retailer 2
-
$50,016 AUD
View
Price last confirmed 39 days ago
B+
Retailer 3
-
$51,767 AUD
View
B+
Retailer 4
-
$52,209 AUD
View
B+
Retailer 5
-
$55,180 AUD
View
Retailer 6
-
$55,209 AUD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$57,303 AUD
View
Retailer 8
-
$57,417 AUD
View
Price last confirmed 36 days ago
Retailer 9
-
$59,051 AUD
View
Price last confirmed 36 days ago
Retailer 10
-
$59,626 AUD
View
Price last confirmed 38 days ago
B
Retailer 11
-
$61,201 AUD
View
B
Retailer 12
-
$62,098 AUD
View
Most Expensive
B
MOH London
D8D00991E · Nov 4
$81,133 AUD
£44,721 GBP
View
12 more retailers have this diamond
Prices start from $49,942 AUDSave up to $31,191 AUD

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.

B+
4.01ct Round
$49,942 AUD