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3.50ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 801638603

Shape and cutting style on the report: Round brilliant

Certificate IGI 801638603

Diamond specifications and retailer prices

From €20,706 EUR
₹2,203,105 INR
As of October 31, 2026
Save €15,873 EUR (43%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €36,579 EUR at MOH London · As of November 1, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 801638603. Listed at 11 retailers as of October 31, 2026, with prices from €20,706 to €36,579, a €15,873 spread on the same certified stone. MOH London lists it at €36,579. 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
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 801638603
Dimensions9.57 × 9.64 × 6.05 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
9.57 mm9.64 mm3.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 801638603
Side View
Table 58.0%Crown 36.2°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.9%

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 31
Current: €36,579 EUR|Low: €20,653 EUR|High: €37,020 EUR|Avg: €26,299 EUR|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5€20,706 EUR
Retailer 2€22,785 EUR
Retailer 10€23,224 EUR
Retailer 9€23,538 EUR
Retailer 3€23,998 EUR
Retailer 7€25,853 EUR
Retailer 6€28,099 EUR
Retailer 8€28,233 EUR
Retailer 4€30,363 EUR
MOH London€36,579 EUR

40 data points across 10 retailers

11 retailers€20,706 EUR to €36,579 EUR

A
Cheapest Retailer
-
€20,706 EUR
₹2,203,105 INR
A
Retailer 2
-
€22,785 EUR
$25,455 USD
View
A
Retailer 3
-
€23,224 EUR
$25,946 USD
View
A
Retailer 4
-
€23,538 EUR
$26,297 USD
View
A
Retailer 5
-
€23,998 EUR
£21,111 GBP
View
A
Retailer 6
-
€25,853 EUR
$28,883 USD
View
B+
Retailer 7
-
€28,099 EUR
View
B+
Retailer 8
-
€28,233 EUR
$31,542 USD
View
B+
Retailer 9
-
€28,771 EUR
$32,143 USD
View
B+
Retailer 10
-
€30,363 EUR
ZAR 548,003 ZAR
View
Most Expensive
B
MOH London
52B90A9A0 · Nov 1
€36,579 EUR
£32,178 GBP
View
10 more retailers have this diamond
Prices start from €20,706 EURSave up to €15,873 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
€20,706 EUR