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Radiant|Natural|GIA

2.51ct F SI2 Radiant Natural Diamond

EX • F/SI2 • GIA 5231771563

Certificate GIA 5231771563

Diamond specifications and retailer prices

From £11,090 GBP
$14,860 USD
As of November 2, 2026
Save £4,582 GBP (29%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £15,673 GBP at Jared · As of November 2, 2026
View at Jared

About this 2.51ct natural radiant diamond

This 2.51ct natural radiant sits in the two to three carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231771563. Listed at 8 retailers as of November 2, 2026, with prices from £11,090 to £15,673, a £4,582 spread on the same certified stone. Jared lists it at £15,673. 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle44.57°
Pavilion angle30.14°
OriginNatural
Grading LabGIA
CertificateGIA 5231771563
Dimensions8.95 × 6.74 × 4.47 mm
L/W Ratio1.33
Top View
8.95 mm6.74 mm2.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5231771563
Side View
Table 68.0%Crown 44.57°Girdle: STK-VTKPavilion 30.14°Culet: NoneDepth 66.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £15,673 GBP|Low: £11,090 GBP|High: £15,673 GBP|Avg: £13,438 GBP
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 5, 2026
Retailer 4£11,090 GBP
Retailer 5£11,883 GBP
Retailer 8£12,241 GBP
Retailer 2£12,377 GBP
Retailer 9£13,254 GBP
Retailer 10£13,985 GBP
Retailer 3£14,706 GBP
Retailer 6£15,173 GBP
Retailer 7£15,173 GBP
Jared£15,673 GBP

3 data points across 10 retailers

8 retailers£11,090 GBP to £15,673 GBP

A
Cheapest Retailer
-
£11,090 GBP
$14,860 USD
A
Retailer 2
-
£11,883 GBP
$15,922 USD
View
A
Retailer 3
-
£12,053 GBP
A$24,846 AUD
View
A
Retailer 4
-
£12,377 GBP
$16,584 USD
View
Final sale: no returns
A
Retailer 5
-
£14,706 GBP
$19,705 USD
View
A
Retailer 6
-
£15,173 GBP
$20,330 USD
View
A
Retailer 7
-
£15,173 GBP
$20,330 USD
View
Most Expensive
A
Jared
159330553 · Nov 2
£15,673 GBP
$21,000 USD
View
7 more retailers have this diamond
Prices start from £11,090 GBPSave up to £4,582 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
2.51ct Radiant
£11,090 GBP