Round|Natural|GIA

4.01ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1543001587

Certificate GIA 1543001587

Diamond specifications and retailer prices

From $48,827 CAD
As of November 6, 2026
Save $30,494 CAD (38%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $79,321 CAD 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 $48,827 to $79,321, a $30,494 spread on the same certified stone. MOH London lists it at $79,321. 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
Color
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: $79,321 CAD|Low: $47,159 CAD|High: $79,959 CAD|Avg: $55,515 CAD|+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$47,741 CAD
Retailer 10$48,827 CAD
Retailer 2$50,611 CAD
Retailer 3$50,955 CAD
Retailer 7$51,043 CAD
Retailer 12$51,817 CAD
Retailer 9$53,948 CAD
Retailer 8$56,023 CAD
Retailer 11$57,733 CAD
Retailer 5$59,835 CAD
Retailer 6$60,712 CAD
MOH London$79,321 CAD

32 data points across 12 retailers

13 retailers$48,827 CAD to $79,321 CAD

B+
Cheapest Retailer
-
$48,827 CAD
Retailer 2
-
$48,899 CAD
View
Price last confirmed 39 days ago
B+
Retailer 3
-
$50,611 CAD
View
B+
Retailer 4
-
$51,043 CAD
View
B+
Retailer 5
-
$53,948 CAD
View
Retailer 6
-
$53,976 CAD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
$56,023 CAD
View
Retailer 8
-
$56,135 CAD
View
Price last confirmed 36 days ago
Retailer 9
-
$57,733 CAD
View
Price last confirmed 36 days ago
Retailer 10
-
$58,294 CAD
View
Price last confirmed 38 days ago
B
Retailer 11
-
$59,835 CAD
View
B
Retailer 12
-
$60,712 CAD
View
Most Expensive
B
MOH London
D8D00991E · Nov 4
$79,321 CAD
£44,721 GBP
View
12 more retailers have this diamond
Prices start from $48,827 CADSave up to $30,494 CAD

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
$48,827 CAD