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Round|Natural|IGI

3.25ct I SI1 Round Natural Diamond

EX • I/SI1 • IGI 819634308

Shape and cutting style on the report: Round brilliant

Certificate IGI 819634308

Diamond specifications and retailer prices

From £15,385 GBP
₹1,963,249 INR
As of October 30, 2026
Save £11,460 GBP (43%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £26,845 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3.25ct natural round diamond

This 3.25ct 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 819634308. Listed at 16 retailers as of October 29, 2026, with prices from £15,385 to £26,845, a £11,460 spread on the same certified stone. MOH London lists it at £26,845. 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

3.25
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 819634308
Dimensions9.37 × 9.44 × 5.90 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
9.37 mm9.44 mm3.25 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 819634308
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 62.8%

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: £26,845 GBP|Low: £15,292 GBP|High: £27,023 GBP|Avg: £20,101 GBP|-0.4%
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
October 30, 2026
Retailer 2£15,385 GBP
Retailer 4£16,352 GBP
Retailer 7£17,506 GBP
Retailer 5£18,085 GBP
Retailer 13£18,872 GBP
Retailer 3£19,816 GBP
Retailer 12£20,444 GBP
Retailer 8£20,745 GBP
Retailer 6£20,819 GBP
Retailer 11£21,231 GBP
Retailer 10£22,046 GBP
Retailer 9£24,221 GBP
MOH London£26,845 GBP

32 data points across 13 retailers

16 retailers£15,385 GBP to £26,845 GBP

A
Cheapest Retailer
-
£15,385 GBP
₹1,963,249 INR
Retailer 2
-
£16,352 GBP
$21,910 USD
View
Price last confirmed 10 days ago
A
Retailer 3
-
£17,182 GBP
$23,022 USD
View
A
Retailer 4
-
£17,506 GBP
View
A
Retailer 5
-
£17,961 GBP
$24,066 USD
View
A
Retailer 6
-
£18,085 GBP
$24,232 USD
View
Final sale: no returns
A
Retailer 7
-
£18,375 GBP
$24,620 USD
View
A
Retailer 8
-
£18,872 GBP
$25,286 USD
View
A
Retailer 9
-
£19,816 GBP
$26,551 USD
View
B+
Retailer 10
-
£20,444 GBP
$27,393 USD
View
A
Retailer 11
-
£20,745 GBP
€26,472 EUR
View
A
Retailer 12
-
£20,819 GBP
View
B+
Retailer 13
-
£21,231 GBP
$28,447 USD
View
B+
Retailer 14
-
£22,046 GBP
ZAR 477,203 ZAR
View
B+
Retailer 15
-
£24,221 GBP
$32,453 USD
View
Most Expensive
B+
MOH London
42C7BA705 · Oct 29
£26,845 GBP
View
15 more retailers have this diamond
Prices start from £15,385 GBPSave up to £11,460 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
3.25ct Round
£15,385 GBP