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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 $36,233 NZD
$20,421 USD
As of October 30, 2026
Save $19,531 NZD (35%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $55,764 NZD 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 591353387. Listed at 11 retailers as of October 30, 2026, with prices from $36,233 to $55,764, a $19,531 spread on the same certified stone. MOH London lists it at $55,764. 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: $55,764 NZD|Low: $31,989 NZD|High: $56,438 NZD|Avg: $41,751 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 4$32,095 NZD
Retailer 3$36,233 NZD
Retailer 9$37,526 NZD
Retailer 5$37,771 NZD
Retailer 10$39,413 NZD
Retailer 6$41,384 NZD
Retailer 7$42,697 NZD
Retailer 2$43,131 NZD
Retailer 8$44,340 NZD
Retailer 11$50,584 NZD
MOH London$55,764 NZD

42 data points across 11 retailers

11 retailers$36,233 NZD to $55,764 NZD

Retailer 1
-
$32,095 NZD
₹1,722,742 INR
Price last confirmed 8 days ago
A
Retailer 2
-
$36,233 NZD
$20,421 USD
View
A
Retailer 3
-
$37,526 NZD
A$32,538 AUD
View
A
Retailer 4
-
$37,771 NZD
$21,288 USD
View
Final sale: no returns
A
Retailer 5
-
$39,413 NZD
$22,213 USD
View
A
Retailer 6
-
$41,384 NZD
$23,324 USD
View
A
Retailer 7
-
$42,697 NZD
$24,064 USD
View
A
Retailer 8
-
$43,131 NZD
€23,151 EUR
View
B+
Retailer 9
-
$44,340 NZD
$24,990 USD
View
B+
Retailer 10
-
$50,584 NZD
$28,509 USD
View
Most Expensive
B+
MOH London
04DD6A172 · Nov 1
$55,764 NZD
£24,747 GBP
View
10 more retailers have this diamond
Prices start from $36,233 NZDSave up to $19,531 NZD

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
$36,233 NZD