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Round|Natural|GIA

2.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6551502523

Certificate GIA 6551502523

Diamond specifications and retailer prices

From £9,486 GBP
As of November 6, 2026
Save £5,165 GBP (35%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £14,651 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 2.5ct natural round diamond

This 2.5ct natural round sits in the two to three carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551502523. Listed at 8 retailers as of November 4, 2026, with prices from £9,486 to £14,651, a £5,165 spread on the same certified stone. MOH London lists it at £14,651. 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

2.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6551502523
Dimensions8.53 × 8.60 × 5.45 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
8.53 mm8.60 mm2.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551502523
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 63.6%

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 6
Current: £14,651 GBP|Low: £9,868 GBP|High: £14,867 GBP|Avg: £11,874 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4£9,868 GBP
Retailer 2£10,764 GBP
Retailer 5£11,097 GBP
Retailer 3£12,916 GBP
MOH London£14,651 GBP

38 data points across 5 retailers

8 retailers£9,486 GBP to £14,651 GBP

A
Cheapest Retailer
-
£9,486 GBP
A
Retailer 2
-
£9,868 GBP
View
B+
Retailer 3
-
£10,073 GBP
View
B+
Retailer 4
-
£10,764 GBP
View
B+
Retailer 5
-
£11,097 GBP
View
B
Retailer 6
-
£12,916 GBP
View
B
Retailer 7
-
£13,326 GBP
View
Most Expensive
B
MOH London
31C40BC0C · Nov 4
£14,651 GBP
View
7 more retailers have this diamond
Prices start from £9,486 GBPSave up to £5,165 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
2.50ct Round
£9,486 GBP