Round|Natural|GIA

2.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 2231814045

Certificate GIA 2231814045

Diamond specifications and retailer prices

From £17,232 GBP

$23,089 USD

As of November 1, 2026

Save £12,038 GBP (41%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: £29,270 GBP at MOH London · As of November 1, 2026

View at MOH London

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2231814045. Listed at 14 retailers as of November 1, 2026, with prices from £17,232 to £29,270, a £12,038 spread on the same certified stone. MOH London lists it at £29,270. 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

2.51

Carat

Colour

SI2

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle32.5°

Pavilion angle41.6°

OriginNatural

Grading LabGIA

CertificateGIA 2231814045

Dimensions8.77 × 8.80 × 5.34 mm

L/W Ratio1.00

Cert comments

Additional clouds are not shown. Pinpoints are not shown.

Key to symbols

Cloud, Crystal, Feather

View GIA Report →View Loupe360 Video →

Top View

OriginNatural

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateGIA 2231814045

Side View

Caratlytics Score

How it works →

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: £29,270 GBP|Low: £17,960 GBP|High: £29,623 GBP|Avg: £22,125 GBP|-0.9%

MOH London

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

November 2, 2026

Retailer 9£17,960 GBP

Retailer 3£19,095 GBP

Retailer 8£19,678 GBP

Retailer 5£20,303 GBP

Retailer 6£21,084 GBP

Retailer 2£21,562 GBP

Retailer 4£22,087 GBP

Retailer 7£26,551 GBP

MOH London£29,270 GBP

31 data points across 9 retailers

14 retailers£17,232 GBP to £29,270 GBP

Cheapest Retailer

£17,232 GBP

$23,089 USD

B+

Retailer 2

£17,817 GBP

CA$33,156 CAD

View

B+

Retailer 3

£17,960 GBP

$24,065 USD

View

Final sale: no returns

B+

Retailer 4

£19,095 GBP

View

B+

Retailer 5

£19,678 GBP

$26,367 USD

View

B+

Retailer 6

£20,303 GBP

$27,204 USD

View

Retailer 7

£20,658 GBP

$27,680 USD

View

Price last confirmed 11 days ago

Retailer 8

£20,658 GBP

$27,680 USD

View

Price last confirmed 7 days ago

B+

Retailer 9

£21,084 GBP

$28,250 USD

View

Retailer 10

£21,345 GBP

$28,600 USD

View

Price last confirmed 7 days ago

B+

Retailer 11

£21,562 GBP

View

B+

Retailer 12

£22,087 GBP

€28,185 EUR

View

Retailer 13

£26,551 GBP

$35,575 USD

View

Most Expensive

MOH London

07A98A37C · Nov 1

£29,270 GBP

View

13 more retailers have this diamond

Prices start from £17,232 GBPSave up to £12,038 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.

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2.51ct Round

£17,232 GBP