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Round|Natural|IGI

3.50ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 533209970

Shape and cutting style on the report: Round brilliant

Certificate IGI 533209970

Diamond specifications and retailer prices

From €18,253 EUR
As of November 5, 2026
Save €9,764 EUR (35%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: €28,017 EUR at MOH London · As of November 4, 2026
View at MOH London

About this 3.5ct natural round diamond

This 3.5ct 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 533209970. Listed at 22 retailers as of November 4, 2026, with prices from €18,253 to €28,017, a €9,764 spread on the same certified stone. MOH London lists it at €28,017. 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

3.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.6°
Pavilion angle41.5°
OriginNatural
Grading LabIGI
CertificateIGI 533209970
Dimensions9.61 × 9.66 × 5.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
9.61 mm9.66 mm3.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 533209970
Side View
Table 61.5%Crown 34.6°Girdle: MED-STKPavilion 41.5°Culet: NoneDepth 62.1%

Caratlytics Score

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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: €28,017 EUR|Low: €18,027 EUR|High: €28,430 EUR|Avg: €20,690 EUR|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10€18,027 EUR
Retailer 8€18,253 EUR
Retailer 6€18,487 EUR
Retailer 9€19,235 EUR
Retailer 5€19,828 EUR
Retailer 7€19,855 EUR
Retailer 3€19,859 EUR
Retailer 4€21,682 EUR
Retailer 2€23,156 EUR
MOH London€28,017 EUR

18 data points across 10 retailers

22 retailers€18,253 EUR to €28,017 EUR

A
Cheapest Retailer
-
€18,253 EUR
A
Retailer 2
-
€18,487 EUR
View
B+
Retailer 3
-
€19,828 EUR
View
Retailer 4
-
€19,855 EUR
View
Price last confirmed 21 days ago
Retailer 5
-
€19,855 EUR
View
Price last confirmed 8 days ago
Retailer 6
-
€19,855 EUR
View
Price last confirmed 12 days ago
A
Retailer 7
-
€19,859 EUR
View
B+
Retailer 8
-
€20,847 EUR
View
Retailer 9
-
€20,847 EUR
View
Price last confirmed 22 days ago
Retailer 10
-
€20,847 EUR
View
Price last confirmed 12 days ago
Retailer 11
-
€20,847 EUR
View
Price last confirmed 8 days ago
Retailer 12
-
€21,509 EUR
View
Price last confirmed 27 days ago
Retailer 13
-
€21,509 EUR
View
Price last confirmed 8 days ago
Retailer 14
-
€21,509 EUR
View
Price last confirmed 23 days ago
B+
Retailer 15
-
€21,682 EUR
View
Retailer 16
-
€22,336 EUR
View
Price last confirmed 24 days ago
B+
Retailer 17
-
€22,336 EUR
View
Retailer 18
-
€22,336 EUR
View
Price last confirmed 16 days ago
B+
Retailer 19
-
€23,156 EUR
View
Retailer 20
-
€25,482 EUR
View
Price last confirmed 23 days ago
Retailer 21
-
€25,482 EUR
View
Price last confirmed 17 days ago
Most Expensive
B
MOH London
18017C5BC · Nov 4
€28,017 EUR
£24,761 GBP
View
21 more retailers have this diamond
Prices start from €18,253 EURSave up to €9,764 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
3.50ct Round
€18,253 EUR