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4.03ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 613368674

Shape and cutting style on the report: Round brilliant

Certificate IGI 613368674

Diamond specifications and retailer prices

From $16,910 USD
As of November 4, 2026
Save $9,539 USD (36%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $26,449 USD at MOH London · As of November 4, 2026
View at MOH London

About this 4.03ct natural round diamond

This 4.03ct 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 613368674. Listed at 15 retailers as of November 4, 2026, with prices from $16,910 to $26,449, a $9,539 spread on the same certified stone. MOH London lists it at $26,449. 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

4.03
Carat
K
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 613368674
Dimensions10.15 × 10.12 × 6.27 mm
L/W Ratio1.00
Culet sizePointed
Top View
10.15 mm10.12 mm4.03 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 613368674
Side View
Table 62.0%Crown 34.8°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $26,449 USD|Low: $16,910 USD|High: $27,861 USD|Avg: $20,767 USD|-5.1%
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
Retailer 15
November 6, 2026
Retailer 11$16,910 USD
Retailer 7$17,031 USD
Retailer 4$17,232 USD
Retailer 2$17,555 USD
Retailer 9$17,623 USD
Retailer 12$18,315 USD
Retailer 14$18,743 USD
Retailer 5$19,681 USD
Retailer 6$20,305 USD
Retailer 10$20,443 USD
Retailer 13$20,835 USD
Retailer 3$21,086 USD
Retailer 8$21,131 USD
Retailer 15$24,056 USD
MOH London$26,449 USD

36 data points across 15 retailers

15 retailers$16,910 USD to $26,449 USD

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Cheapest Retailer
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$16,910 USD
A
Retailer 2
-
$17,031 USD
View
A
Retailer 3
-
$17,232 USD
View
A
Retailer 4
-
$17,555 USD
View
A
Retailer 5
-
$17,623 USD
View
A
Retailer 6
-
$18,315 USD
View
Retailer 7
-
$18,743 USD
View
Price last confirmed 8 days ago
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Retailer 8
-
$19,681 USD
View
A
Retailer 9
-
$20,305 USD
View
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Retailer 10
-
$20,443 USD
View
A
Retailer 11
-
$20,835 USD
View
A
Retailer 12
-
$21,086 USD
View
A
Retailer 13
-
$21,131 USD
View
A
Retailer 14
-
$24,056 USD
View
Most Expensive
A
MOH London
9847CAC73 · Nov 4
$26,449 USD
£20,826 GBP
View
14 more retailers have this diamond
Prices start from $16,910 USDSave up to $9,539 USD

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
4.03ct Round
$16,910 USD