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3.50ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 591353387

Shape and cutting style on the report: Round brilliant

Certificate IGI 591353387

Diamond specifications and retailer prices

From €18,279 EUR
$20,421 USD
As of October 30, 2026
Save €10,004 EUR (35%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €28,283 EUR at MOH London · As of October 29, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 591353387. Listed at 12 retailers as of October 29, 2026, with prices from €18,279 to €28,283, a €10,004 spread on the same certified stone. MOH London lists it at €28,283. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.5°
OriginNatural
Grading LabIGI
CertificateIGI 591353387
Dimensions9.60 × 9.66 × 6.01 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
9.60 mm9.66 mm3.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 591353387
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €28,283 EUR|Low: €16,138 EUR|High: €28,471 EUR|Avg: €21,046 EUR|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 4€16,191 EUR
Retailer 3€18,279 EUR
Retailer 9€18,931 EUR
Retailer 5€19,055 EUR
Retailer 10€19,883 EUR
Retailer 6€20,877 EUR
Retailer 7€21,539 EUR
Retailer 2€21,913 EUR
Retailer 8€22,368 EUR
Retailer 11€25,518 EUR
MOH London€28,283 EUR

42 data points across 11 retailers

12 retailers€18,279 EUR to €28,283 EUR

Retailer 1
-
€16,191 EUR
₹1,722,742 INR
Price last confirmed 7 days ago
A
Retailer 2
-
€18,279 EUR
$20,421 USD
View
A
Retailer 3
-
€18,931 EUR
A$32,538 AUD
View
A
Retailer 4
-
€19,055 EUR
$21,288 USD
View
Final sale: no returns
A
Retailer 5
-
€19,883 EUR
$22,213 USD
View
Retailer 6
-
€20,641 EUR
$23,060 USD
View
Price last confirmed 74 days ago
A
Retailer 7
-
€20,877 EUR
$23,324 USD
View
A
Retailer 8
-
€21,539 EUR
$24,064 USD
View
A
Retailer 9
-
€21,913 EUR
View
B+
Retailer 10
-
€22,368 EUR
$24,990 USD
View
B+
Retailer 11
-
€25,518 EUR
$28,509 USD
View
Most Expensive
B+
MOH London
04DD6A172 · Oct 29
€28,283 EUR
£24,880 GBP
View
11 more retailers have this diamond
Prices start from €18,279 EURSave up to €10,004 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
€18,279 EUR