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Round|Natural|GIA

2.50ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 1535898943

Certificate GIA 1535898943

Diamond specifications and retailer prices

From £8,478 GBP
As of November 5, 2026
Save £2,947 GBP (26%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £16,475 GBP at MOH London · As of October 8, 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 1535898943. Listed at 14 retailers as of November 5, 2026, with a 35% 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

2.50
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
OriginNatural
Grading LabGIA
CertificateGIA 1535898943
Dimensions8.63 × 8.57 × 5.41 mm
L/W Ratio1.01
Star length45%
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural, Natural
Top View
8.63 mm8.57 mm2.50 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1535898943
Side View
Table 59.0%Crown 35°Girdle: ThickPavilionCulet: NoneDepth 62.9%

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: £16,475 GBP|Low: £8,478 GBP|High: £16,475 GBP|Avg: £10,613 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8£8,478 GBP
Retailer 4£8,775 GBP
Retailer 6£8,919 GBP
Retailer 9£9,499 GBP
Retailer 3£9,696 GBP
Retailer 7£10,018 GBP
Retailer 11£10,261 GBP
Retailer 2£10,812 GBP
Retailer 5£11,425 GBP
Retailer 10£12,182 GBP
MOH London£16,475 GBP

37 data points across 11 retailers

14 retailers£8,478 GBP to £11,425 GBP

A
Cheapest Retailer
-
£8,478 GBP
A
Retailer 2
-
£8,775 GBP
View
A
Retailer 3
-
£8,919 GBP
View
A
Retailer 4
-
£9,499 GBP
View
B+
Retailer 5
-
£10,018 GBP
View
Retailer 6
-
£10,451 GBP
View
Price last confirmed 29 days ago
B+
Retailer 7
-
£10,812 GBP
View
Retailer 8
-
£11,148 GBP
View
Price last confirmed 38 days ago
Retailer 9
-
£11,322 GBP
View
Price last confirmed 29 days ago
B+
Retailer 10
-
£11,425 GBP
View
Retailer 11
-
£11,757 GBP
View
Price last confirmed 38 days ago
Retailer 12
-
£14,181 GBP
View
Price last confirmed 37 days ago
Retailer 13
-
£14,806 GBP
View
Price last confirmed 40 days ago
Most Expensive
MOH London
CBC7E0373 · Oct 8
£16,475 GBP
View
Price last confirmed 29 days ago
13 more retailers have this diamond
Prices start from £8,478 GBPSave up to £2,947 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
£8,478 GBP