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Round|Natural|GIA

2.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 2241088670

Certificate GIA 2241088670

Diamond specifications and retailer prices

From £8,143 GBP
As of November 5, 2026
Save £3,861 GBP (32%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £12,004 GBP at Diamonds Direct · As of November 5, 2026
View at Diamonds Direct

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2241088670. Listed at 13 retailers as of November 5, 2026, with prices from £8,143 to £12,004, a £3,861 spread on the same certified stone. Diamonds Direct lists it at £12,004. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2241088670
Dimensions8.77 × 8.81 × 5.33 mm
L/W Ratio1.00
Culet sizeNone
Top View
8.77 mm8.81 mm2.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2241088670
Side View
Table 57.0%Crown 33°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.6%

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 5
Current: £12,004 GBP|Low: £8,143 GBP|High: £12,004 GBP|Avg: £9,608 GBP
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 5£8,143 GBP
Retailer 2£8,741 GBP
Retailer 12£8,788 GBP
Retailer 8£8,797 GBP
Retailer 9£8,839 GBP
Retailer 11£9,003 GBP
Retailer 3£9,109 GBP
Retailer 7£9,530 GBP
Retailer 6£10,315 GBP
Retailer 4£10,319 GBP
Retailer 10£10,394 GBP
Retailer 13£10,730 GBP
Diamonds Direct£12,004 GBP

29 data points across 13 retailers

13 retailers£8,143 GBP to £12,004 GBP

A
Cheapest Retailer
-
£8,143 GBP
A
Retailer 2
-
£8,741 GBP
View
A
Retailer 3
-
£8,788 GBP
View
A
Retailer 4
-
£8,797 GBP
View
A
Retailer 5
-
£8,839 GBP
View
A
Retailer 6
-
£9,003 GBP
View
A
Retailer 7
-
£9,109 GBP
View
A
Retailer 8
-
£9,530 GBP
View
B+
Retailer 9
-
£10,315 GBP
View
B+
Retailer 10
-
£10,319 GBP
View
B+
Retailer 11
-
£10,394 GBP
View
B+
Retailer 12
-
£10,730 GBP
View
Most Expensive
B+
Diamonds Direct
1133708 · Nov 5
£12,004 GBP
$16,156 USD
View
12 more retailers have this diamond
Prices start from £8,143 GBPSave up to £3,861 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
£8,143 GBP