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3.09ct J SI1 Round Natural Diamond

EX • J/SI1 • IGI 623473411

Shape and cutting style on the report: Round brilliant

Certificate IGI 623473411

Diamond specifications and retailer prices

From £12,700 GBP
$17,017 USD
As of October 26, 2026
Save £7,148 GBP (36%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £19,849 GBP at MOH London · As of October 26, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 623473411. Listed at 10 retailers as of October 26, 2026, with prices from £12,700 to £19,849, a £7,148 spread on the same certified stone. MOH London lists it at £19,849. 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

3.09
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 623473411
Dimensions9.24 × 9.20 × 5.81 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
9.24 mm9.20 mm3.09 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 623473411
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 41°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 26
Current: £19,849 GBP|Low: £12,700 GBP|High: £22,609 GBP|Avg: £16,014 GBP|-12.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 28, 2026
Retailer 6£12,700 GBP
Retailer 7£12,879 GBP
Retailer 2£13,229 GBP
Retailer 3£13,273 GBP
Retailer 5£13,926 GBP
Retailer 8£14,009 GBP
Retailer 10£15,310 GBP
Retailer 9£15,573 GBP
Retailer 4£16,348 GBP
MOH London£19,849 GBP

29 data points across 10 retailers

10 retailers£12,700 GBP to £19,849 GBP

A
Cheapest Retailer
-
£12,700 GBP
$17,017 USD
A
Retailer 2
-
£12,879 GBP
$17,257 USD
View
A
Retailer 3
-
£13,229 GBP
View
A
Retailer 4
-
£13,273 GBP
$17,785 USD
View
A
Retailer 5
-
£13,926 GBP
View
Retailer 6
-
£14,009 GBP
$18,771 USD
View
Price last confirmed 7 days ago
Retailer 7
-
£15,310 GBP
€19,537 EUR
View
Price last confirmed 8 days ago
A
Retailer 8
-
£15,573 GBP
$20,866 USD
View
B+
Retailer 9
-
£16,348 GBP
ZAR 353,872 ZAR
View
Most Expensive
B+
MOH London
F650EBF77 · Oct 26
£19,849 GBP
View
9 more retailers have this diamond
Prices start from £12,700 GBPSave up to £7,148 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
£12,700 GBP