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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 $29,071 AUD
$20,421 USD
As of October 30, 2026
Save $15,911 AUD (35%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $44,982 AUD 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 $29,071 to $44,982, a $15,911 spread on the same certified stone. MOH London lists it at $44,982. 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: $44,982 AUD|Low: $25,666 AUD|High: $45,282 AUD|Avg: $33,472 AUD|+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$25,751 AUD
Retailer 3$29,071 AUD
Retailer 9$30,109 AUD
Retailer 5$30,306 AUD
Retailer 10$31,622 AUD
Retailer 6$33,204 AUD
Retailer 7$34,258 AUD
Retailer 2$34,852 AUD
Retailer 8$35,576 AUD
Retailer 11$40,585 AUD
MOH London$44,982 AUD

42 data points across 11 retailers

12 retailers$29,071 AUD to $44,982 AUD

Retailer 1
-
$25,751 AUD
₹1,722,742 INR
Price last confirmed 7 days ago
A
Retailer 2
-
$29,071 AUD
$20,421 USD
View
A
Retailer 3
-
$30,109 AUD
View
A
Retailer 4
-
$30,306 AUD
$21,288 USD
View
Final sale: no returns
A
Retailer 5
-
$31,622 AUD
$22,213 USD
View
Retailer 6
-
$32,828 AUD
$23,060 USD
View
Price last confirmed 74 days ago
A
Retailer 7
-
$33,204 AUD
$23,324 USD
View
A
Retailer 8
-
$34,258 AUD
$24,064 USD
View
A
Retailer 9
-
$34,852 AUD
€23,316 EUR
View
B+
Retailer 10
-
$35,576 AUD
$24,990 USD
View
B+
Retailer 11
-
$40,585 AUD
$28,509 USD
View
Most Expensive
B+
MOH London
04DD6A172 · Oct 29
$44,982 AUD
£24,880 GBP
View
11 more retailers have this diamond
Prices start from $29,071 AUDSave up to $15,911 AUD

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
$29,071 AUD