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Round|Natural|IGI

3.09ct I VS1 Round Natural Diamond

EX • I/VS1 • IGI 826659870

Shape and cutting style on the report: Round brilliant

Certificate IGI 826659870

Diamond specifications and retailer prices

From £17,564 GBP
As of November 5, 2026
Save £9,658 GBP (35%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £27,223 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 3.09ct natural round diamond

This 3.09ct natural round sits in the three to five carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 826659870. Listed at 8 retailers as of November 4, 2026, with prices from £17,564 to £27,223, a £9,658 spread on the same certified stone. MOH London lists it at £27,223. At this carat range, natural pricing varies dramatically across retailers, so the cross-retailer spread on this exact stone is your single best indicator of fair price.

The 4Cs

3.09
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 826659870
Dimensions9.15 × 9.19 × 5.83 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
9.15 mm9.19 mm3.09 ctI / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 826659870
Side View
Table 60.0%Crown 35.6°Girdle: MED-STKPavilion 41.6°CuletDepth 63.5%

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 5
Current: £27,223 GBP|Low: £17,564 GBP|High: £28,220 GBP|Avg: £20,156 GBP|-3.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 3£17,564 GBP
Retailer 4£17,734 GBP
Retailer 7£18,488 GBP
Retailer 6£18,685 GBP
Retailer 5£18,779 GBP
Retailer 8£19,272 GBP
Retailer 2£19,843 GBP
MOH London£27,223 GBP

7 data points across 8 retailers

8 retailers£17,564 GBP to £27,223 GBP

A
Cheapest Retailer
-
£17,564 GBP
A
Retailer 2
-
£17,734 GBP
View
A
Retailer 3
-
£18,488 GBP
View
Final sale: no returns
A
Retailer 4
-
£18,685 GBP
View
A
Retailer 5
-
£18,779 GBP
View
A
Retailer 6
-
£19,272 GBP
View
A
Retailer 7
-
£19,843 GBP
View
Most Expensive
B+
MOH London
E8E5E646C · Nov 4
£27,223 GBP
View
7 more retailers have this diamond
Prices start from £17,564 GBPSave up to £9,658 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
3.09ct Round
£17,564 GBP