Round|Natural|IGI

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 $23,213 USD
₹2,210,775 INR
As of October 30, 2026
Save $17,708 USD (43%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $40,921 USD at MOH London · As of October 26, 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 26, 2026, with prices from $23,213 to $40,921, a $17,708 spread on the same certified stone. MOH London lists it at $40,921. 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 30
Current: $40,921 USD|Low: $23,074 USD|High: $41,359 USD|Avg: $29,431 USD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 4$23,213 USD
Retailer 7$24,730 USD
Retailer 10$25,946 USD
Retailer 9$26,297 USD
Retailer 2$26,811 USD
Retailer 6$28,883 USD
Retailer 3$31,393 USD
Retailer 8$31,542 USD
Retailer 5$33,741 USD
MOH London$40,921 USD

41 data points across 10 retailers

11 retailers$23,213 USD to $40,921 USD

A
Cheapest Retailer
-
$23,213 USD
₹2,210,775 INR
Retailer 2
-
$24,730 USD
View
Price last confirmed 13 days ago
A
Retailer 3
-
$25,946 USD
View
A
Retailer 4
-
$26,297 USD
View
A
Retailer 5
-
$26,811 USD
£21,111 GBP
View
A
Retailer 6
-
$28,883 USD
View
B+
Retailer 7
-
$31,393 USD
€29,898 EUR
View
B+
Retailer 8
-
$31,542 USD
View
B+
Retailer 9
-
$32,143 USD
View
B+
Retailer 10
-
$33,741 USD
ZAR 545,090 ZAR
View
Most Expensive
B
MOH London
52B90A9A0 · Oct 26
$40,921 USD
£32,221 GBP
View
10 more retailers have this diamond
Prices start from $23,213 USDSave up to $17,708 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
$23,213 USD