CaratHunter
Plans
Round|Natural|IGI

2.59ct K SI1 Round Natural Diamond

EX • K/SI1 • IGI 623473359

Shape and cutting style on the report: Round brilliant

Certificate IGI 623473359

Diamond specifications and retailer prices

From £6,382 GBP
As of November 1, 2026
Save £4,226 GBP (40%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £10,608 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 2.59ct natural round diamond

This 2.59ct 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 IGI 623473359. Listed at 16 retailers as of November 1, 2026, with prices from £6,382 to £10,608, a £4,226 spread on the same certified stone. NZ Jewellers lists it at £10,608. 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

2.59
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 623473359
Dimensions8.77 × 8.73 × 5.44 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
8.77 mm8.73 mm2.59 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 623473359
Side View
Table 58.0%Crown 35.8°Girdle: MediumPavilion 41°Culet: NoneDepth 62.2%

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 1
Current: £10,608 GBP|Low: £6,337 GBP|High: £12,492 GBP|Avg: £7,964 GBP|-4.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 7£6,382 GBP
Retailer 5£6,397 GBP
Retailer 14£6,578 GBP
Retailer 6£6,894 GBP
Retailer 8£6,937 GBP
Retailer 13£6,962 GBP
Retailer 2£7,284 GBP
Retailer 15£7,611 GBP
Retailer 3£7,729 GBP
Retailer 12£7,785 GBP
Retailer 10£7,968 GBP
Retailer 9£8,740 GBP
Retailer 4£8,782 GBP
Retailer 11£9,914 GBP
NZ Jewellers£10,608 GBP

21 data points across 15 retailers

16 retailers£6,382 GBP to £10,608 GBP

A
Cheapest Retailer
-
£6,382 GBP
A
Retailer 2
-
£6,397 GBP
View
A
Retailer 3
-
£6,578 GBP
View
Retailer 4
-
£6,894 GBP
View
Price last confirmed 8 days ago
A
Retailer 5
-
£6,937 GBP
View
A
Retailer 6
-
£6,962 GBP
View
A
Retailer 7
-
£7,284 GBP
View
Retailer 8
-
£7,471 GBP
View
Price last confirmed 11 days ago
A
Retailer 9
-
£7,611 GBP
View
A
Retailer 10
-
£7,729 GBP
View
A
Retailer 11
-
£7,785 GBP
View
A
Retailer 12
-
£7,968 GBP
View
A
Retailer 13
-
£8,740 GBP
View
A
Retailer 14
-
£8,782 GBP
View
B+
Retailer 15
-
£9,914 GBP
View
Most Expensive
B+
NZ Jewellers
d94aae01-ede9-4fba-945c-ab6c06e8b425 · Nov 5
£10,608 GBP
$14,278 USD
View
15 more retailers have this diamond
Prices start from £6,382 GBPSave up to £4,226 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
2.59ct Round
£6,382 GBP