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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 $18,089 USD
₹1,722,742 INR
As of October 24, 2026
Save $13,509 USD (43%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $31,598 USD 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 24, 2026, with prices from $18,089 to $31,598, a $13,509 spread on the same certified stone. MOH London lists it at $31,598. 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
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 24
Current: $31,598 USD|Low: $18,029 USD|High: $31,808 USD|Avg: $22,744 USD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 3$18,089 USD
Retailer 7$20,421 USD
Retailer 6$21,150 USD
Retailer 4$21,288 USD
Retailer 5$24,064 USD
Retailer 2$24,482 USD
MOH London$31,598 USD

43 data points across 7 retailers

12 retailers$18,089 USD to $31,598 USD

A
Cheapest Retailer
-
$18,089 USD
₹1,722,742 INR
A
Retailer 2
-
$20,421 USD
View
A
Retailer 3
-
$21,150 USD
A$32,538 AUD
View
A
Retailer 4
-
$21,288 USD
View
Final sale: no returns
A
Retailer 5
-
$22,213 USD
View
Retailer 6
-
$23,060 USD
View
Price last confirmed 73 days ago
A
Retailer 7
-
$23,324 USD
View
A
Retailer 8
-
$24,064 USD
View
A
Retailer 9
-
$24,482 USD
€23,316 EUR
View
B+
Retailer 10
-
$24,990 USD
View
B+
Retailer 11
-
$28,509 USD
View
Most Expensive
B+
MOH London
04DD6A172 · Oct 29
$31,598 USD
£24,880 GBP
View
11 more retailers have this diamond
Prices start from $18,089 USDSave up to $13,509 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
3.50ct Round
$18,089 USD