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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 HK$181,501 HKD
₹2,203,105 INR
As of October 31, 2026
Save HK$139,139 HKD (43%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$320,639 HKD at MOH London · As of November 2, 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 HK$181,501 to HK$320,639, a HK$139,139 spread on the same certified stone. MOH London lists it at HK$320,639. 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
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: HK$320,639 HKD|Low: HK$181,037 HKD|High: HK$324,505 HKD|Avg: HK$233,509 HKD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 3, 2026
Retailer 6HK$181,501 HKD
Retailer 4HK$199,722 HKD
Retailer 9HK$206,329 HKD
Retailer 2HK$208,616 HKD
Retailer 7HK$226,619 HKD
Retailer 3HK$245,208 HKD
Retailer 8HK$247,484 HKD
Retailer 5HK$266,151 HKD
MOH LondonHK$320,639 HKD

41 data points across 9 retailers

11 retailersHK$181,501 HKD to HK$320,639 HKD

A
Cheapest Retailer
-
HK$181,501 HKD
₹2,203,105 INR
A
Retailer 2
-
HK$199,722 HKD
$25,455 USD
View
A
Retailer 3
-
HK$203,575 HKD
$25,946 USD
View
A
Retailer 4
-
HK$206,329 HKD
$26,297 USD
View
A
Retailer 5
-
HK$208,616 HKD
£20,936 GBP
View
A
Retailer 6
-
HK$226,619 HKD
$28,883 USD
View
A
Retailer 7
-
HK$245,208 HKD
€29,764 EUR
View
Retailer 8
-
HK$247,484 HKD
$31,542 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
HK$252,195 HKD
$32,143 USD
View
B+
Retailer 10
-
HK$266,151 HKD
ZAR 548,003 ZAR
View
Most Expensive
B
MOH London
52B90A9A0 · Nov 2
HK$320,639 HKD
£32,178 GBP
View
10 more retailers have this diamond
Prices start from HK$181,501 HKDSave up to HK$139,139 HKD

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
HK$181,501 HKD