CaratHunter
Plans
Round|Natural|IGI

3.50ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 526257569

Shape and cutting style on the report: Round brilliant

Certificate IGI 526257569

Diamond specifications and retailer prices

From £18,392 GBP
₹2,346,969 INR
As of November 1, 2026
Save £13,517 GBP (42%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £31,909 GBP 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 526257569. Listed at 14 retailers as of November 1, 2026, with prices from £18,392 to £31,909, a £13,517 spread on the same certified stone. MOH London lists it at £31,909. 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°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 526257569
Dimensions9.66 × 9.71 × 6.01 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
9.66 mm9.71 mm3.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 526257569
Side View
Table 58.5%Crown 36°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.1%

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: Nov 1
Current: £31,909 GBP|Low: £18,349 GBP|High: £33,006 GBP|Avg: £23,358 GBP|-3.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 2£18,392 GBP
Retailer 3£20,533 GBP
Retailer 4£20,673 GBP
Retailer 6£20,764 GBP
Retailer 11£21,282 GBP
Retailer 13£21,920 GBP
Retailer 9£22,552 GBP
Retailer 10£23,680 GBP
Retailer 5£24,431 GBP
Retailer 8£24,791 GBP
Retailer 12£25,371 GBP
Retailer 7£26,486 GBP
MOH London£31,909 GBP

35 data points across 13 retailers

14 retailers£18,392 GBP to £31,909 GBP

A
Cheapest Retailer
-
£18,392 GBP
₹2,346,969 INR
A
Retailer 2
-
£20,533 GBP
$27,512 USD
View
A
Retailer 3
-
£20,673 GBP
$27,699 USD
View
Final sale: no returns
A
Retailer 4
-
£20,764 GBP
View
A
Retailer 5
-
£21,282 GBP
$28,516 USD
View
A
Retailer 6
-
£21,598 GBP
$28,939 USD
View
A
Retailer 7
-
£21,920 GBP
$29,370 USD
View
B+
Retailer 8
-
£22,552 GBP
$30,217 USD
View
B+
Retailer 9
-
£23,680 GBP
$31,728 USD
View
B+
Retailer 10
-
£24,431 GBP
$32,735 USD
View
B+
Retailer 11
-
£24,791 GBP
€31,635 EUR
View
B+
Retailer 12
-
£25,371 GBP
$33,994 USD
View
B+
Retailer 13
-
£26,486 GBP
ZAR 573,313 ZAR
View
Most Expensive
B
MOH London
FD8BC17A8 · Nov 1
£31,909 GBP
View
13 more retailers have this diamond
Prices start from £18,392 GBPSave up to £13,517 GBP

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
£18,392 GBP