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2.51ct F SI2 Round Natural Diamond

EX • F/SI2 • HRD 260000122528

Certificate HRD 260000122528

Diamond specifications and retailer prices

From £8,014 GBP
₹1,022,639 INR
As of November 1, 2026
Save £6,307 GBP (44%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £15,698 GBP at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

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 HRD 260000122528. Listed at 8 retailers as of November 1, 2026, with a 79% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle41.1°
OriginNatural
Grading LabHRD
CertificateHRD 260000122528
Dimensions8.64 × 8.59 × 5.46 mm
L/W Ratio1.01
Culet sizeNone
Top View
8.64 mm8.59 mm2.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000122528
Side View
Table 56.0%Crown 36.6°Girdle: MediumPavilion 41.1°Culet: NoneDepth 63.4%

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 1
Current: £11,020 GBP|Low: £8,014 GBP|High: £14,888 GBP|Avg: £11,059 GBP|+6.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 2£8,014 GBP
Retailer 5£9,391 GBP
Retailer 1£11,020 GBP
Retailer 3£11,237 GBP
Retailer 4£14,321 GBP

26 data points across 5 retailers

8 retailers£8,014 GBP to £14,321 GBP

A
Cheapest Retailer
-
£8,014 GBP
₹1,022,639 INR
A
Retailer 2
-
£9,391 GBP
$12,583 USD
View
A
Retailer 3
-
£11,020 GBP
€14,063 EUR
View
A
Retailer 4
-
£11,237 GBP
$15,057 USD
View
Retailer 5
-
£11,263 GBP
$15,091 USD
View
Price last confirmed 25 days ago
Retailer 6
-
£11,696 GBP
$15,672 USD
View
Price last confirmed 23 days ago
A
Retailer 7
-
£14,321 GBP
View
Most Expensive
NZ Jewellers
b52f63b4-d2fa-47ec-a6e6-f90901827270 · Sep 26
£15,698 GBP
$21,034 USD
View
Price last confirmed 36 days ago
7 more retailers have this diamond
Prices start from £8,014 GBPSave up to £6,307 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 Round
£8,014 GBP