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Round|Natural|GIA

2.51ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 5242069331

Certificate GIA 5242069331

Diamond specifications and retailer prices

From £8,118 GBP
As of November 3, 2026
Save £4,091 GBP (34%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £12,209 GBP at Diamonds Direct · As of November 1, 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 5242069331. Listed at 13 retailers as of November 1, 2026, with prices from £8,118 to £12,209, a £4,091 spread on the same certified stone. Diamonds Direct lists it at £12,209. 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
FluorescenceNone
Crown angle34.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 5242069331
Dimensions8.63 × 8.67 × 5.43 mm
L/W Ratio1.00
Culet sizeNone
Top View
8.63 mm8.67 mm2.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5242069331
Side View
Table 55.0%Crown 34.5°Girdle: MED-STKPavilion 41.2°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: Nov 3
Current: £12,209 GBP|Low: £8,118 GBP|High: £12,874 GBP|Avg: £10,044 GBP|-5.2%
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 5, 2026
Retailer 6£8,118 GBP
Retailer 8£8,764 GBP
Retailer 7£8,852 GBP
Retailer 10£8,942 GBP
Retailer 11£8,989 GBP
Retailer 2£9,015 GBP
Retailer 13£9,156 GBP
Retailer 12£9,250 GBP
Retailer 3£10,490 GBP
Retailer 9£10,547 GBP
Retailer 4£10,559 GBP
Retailer 5£10,909 GBP
Diamonds Direct£12,209 GBP

30 data points across 13 retailers

13 retailers£8,118 GBP to £12,209 GBP

A
Cheapest Retailer
-
£8,118 GBP
A
Retailer 2
-
£8,764 GBP
View
A
Retailer 3
-
£8,852 GBP
View
A
Retailer 4
-
£8,942 GBP
View
A
Retailer 5
-
£8,989 GBP
View
A
Retailer 6
-
£9,015 GBP
View
A
Retailer 7
-
£9,156 GBP
View
A
Retailer 8
-
£9,250 GBP
View
B+
Retailer 9
-
£10,490 GBP
View
B+
Retailer 10
-
£10,547 GBP
View
B+
Retailer 11
-
£10,559 GBP
View
Retailer 12
-
£10,909 GBP
View
Price last confirmed 11 days ago
Most Expensive
B+
Diamonds Direct
1120578 · Nov 1
£12,209 GBP
$16,432 USD
View
12 more retailers have this diamond
Prices start from £8,118 GBPSave up to £4,091 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
£8,118 GBP