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Round|Natural|IGI

2.50ct K SI2 Round Natural Diamond

EX • K/SI2 • IGI 827606478

Shape and cutting style on the report: Round brilliant

Certificate IGI 827606478

Diamond specifications and retailer prices

From £4,170 GBP
As of November 1, 2026
Save £3,828 GBP (48%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £7,998 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 827606478. Listed at 12 retailers as of November 1, 2026, with prices from £4,170 to £7,998, a £3,828 spread on the same certified stone. NZ Jewellers lists it at £7,998. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 827606478
Dimensions8.66 × 8.70 × 5.24 mm
L/W Ratio1.00
Girdle conditionPARTLY FACETED
Top View
8.66 mm8.70 mm2.50 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 827606478
Side View
Table 60.0%Crown 35.4°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 60.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £7,998 GBP|Low: £3,913 GBP|High: £7,998 GBP|Avg: £5,202 GBP|+3.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 4£4,170 GBP
Retailer 3£4,198 GBP
Retailer 12£4,213 GBP
Retailer 8£4,783 GBP
Retailer 9£4,783 GBP
Retailer 10£4,783 GBP
Retailer 11£4,899 GBP
Retailer 5£5,185 GBP
Retailer 7£5,518 GBP
Retailer 2£5,681 GBP
Retailer 6£7,046 GBP
NZ Jewellers£7,998 GBP

36 data points across 12 retailers

12 retailers£4,170 GBP to £7,998 GBP

A
Cheapest Retailer
-
£4,170 GBP
A
Retailer 2
-
£4,198 GBP
View
A
Retailer 3
-
£4,213 GBP
View
Retailer 4
-
£4,783 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£4,783 GBP
View
A
Retailer 6
-
£4,783 GBP
View
A
Retailer 7
-
£4,899 GBP
View
A
Retailer 8
-
£5,185 GBP
View
B+
Retailer 9
-
£5,518 GBP
View
A
Retailer 10
-
£5,681 GBP
View
B+
Retailer 11
-
£7,046 GBP
View
Most Expensive
B+
NZ Jewellers
ad6c1acc-07ea-4f68-a7e7-bc6d873da663 · Nov 5
£7,998 GBP
$10,765 USD
View
11 more retailers have this diamond
Prices start from £4,170 GBPSave up to £3,828 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
£4,170 GBP