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Round|Natural|IGI

3.11ct J SI2 Round Natural Diamond

EX • J/SI2 • IGI 506186997

Shape and cutting style on the report: Round brilliant

Certificate IGI 506186997

Diamond specifications and retailer prices

From £12,287 GBP
$16,463 USD
As of October 30, 2026
Save £10,018 GBP (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £22,305 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 3.11ct natural round diamond

This 3.11ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 506186997. Listed at 13 retailers as of October 29, 2026, with prices from £12,287 to £22,305, a £10,018 spread on the same certified stone. MOH London lists it at £22,305. 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

3.11
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 506186997
Dimensions9.32 × 9.25 × 5.84 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
9.32 mm9.25 mm3.11 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 506186997
Side View
Table 55.0%Crown 34.9°Girdle: MediumPavilion 40.8°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: £22,305 GBP|Low: £11,905 GBP|High: £22,453 GBP|Avg: £15,238 GBP|+2.7%
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
Retailer 14
October 30, 2026
Retailer 11£12,287 GBP
Retailer 7£12,393 GBP
Retailer 8£13,059 GBP
Retailer 5£13,120 GBP
Retailer 12£13,142 GBP
Retailer 9£13,613 GBP
Retailer 13£14,206 GBP
Retailer 14£14,916 GBP
Retailer 4£15,389 GBP
Retailer 3£15,981 GBP
Retailer 2£16,610 GBP
Retailer 6£17,473 GBP
Retailer 10£20,125 GBP
MOH London£22,305 GBP

29 data points across 14 retailers

13 retailers£12,287 GBP to £22,305 GBP

A
Cheapest Retailer
-
£12,287 GBP
$16,463 USD
A
Retailer 2
-
£12,393 GBP
$16,605 USD
View
A
Retailer 3
-
£13,059 GBP
$17,498 USD
View
A
Retailer 4
-
£13,120 GBP
$17,579 USD
View
A
Retailer 5
-
£13,142 GBP
$17,609 USD
View
B+
Retailer 6
-
£13,613 GBP
$18,240 USD
View
Final sale: no returns
A
Retailer 7
-
£14,206 GBP
$19,034 USD
View
B+
Retailer 8
-
£14,916 GBP
$19,986 USD
View
B+
Retailer 9
-
£15,389 GBP
$20,620 USD
View
B+
Retailer 10
-
£15,981 GBP
$21,413 USD
View
B+
Retailer 11
-
£16,610 GBP
€21,196 EUR
View
B
Retailer 12
-
£20,125 GBP
$26,965 USD
View
Most Expensive
B
MOH London
1A17AD9C3 · Oct 29
£22,305 GBP
View
12 more retailers have this diamond
Prices start from £12,287 GBPSave up to £10,018 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
3.11ct Round
£12,287 GBP