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6.09ct L SI1 Round Natural Diamond

EX • L/SI1 • IGI 654416628

Shape and cutting style on the report: Round brilliant

Certificate IGI 654416628

Diamond specifications and retailer prices

From £22,848 GBP
As of November 5, 2026
Save £5,384 GBP (19%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £28,232 GBP at Aurelinne · As of November 5, 2026
View at Aurelinne

About this 6.09ct natural round diamond

This 6.09ct natural round sits in the over five carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 654416628. Listed at 10 retailers as of November 5, 2026, with prices from £22,848 to £28,232, a £5,384 spread on the same certified stone. Aurelinne lists it at £28,232. 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

6.09
Carat
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle34.8°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 654416628
Dimensions11.63 × 11.72 × 7.22 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
11.63 mm11.72 mm6.09 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateIGI 654416628
Side View
Table 56.0%Crown 34.8°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
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 5
Current: £28,232 GBP|Low: £22,149 GBP|High: £28,232 GBP|Avg: £25,395 GBP|+3.4%
Aurelinne
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 6£22,848 GBP
Retailer 11£23,219 GBP
Retailer 8£23,683 GBP
Retailer 3£24,370 GBP
Retailer 2£24,581 GBP
Retailer 10£25,095 GBP
Retailer 9£26,350 GBP
Retailer 7£27,187 GBP
Retailer 4£27,318 GBP
Retailer 5£27,493 GBP
Aurelinne£28,232 GBP

17 data points across 11 retailers

10 retailers£22,848 GBP to £28,232 GBP

A
Cheapest Retailer
-
£22,848 GBP
A
Retailer 2
-
£23,219 GBP
View
A
Retailer 3
-
£23,683 GBP
View
B+
Retailer 4
-
£24,370 GBP
View
A
Retailer 5
-
£24,581 GBP
View
B+
Retailer 6
-
£26,350 GBP
View
B+
Retailer 7
-
£27,187 GBP
View
B+
Retailer 8
-
£27,318 GBP
View
B+
Retailer 9
-
£27,493 GBP
View
Most Expensive
B+
Aurelinne
f10e35c6-5384-4a44-af98-122d689a1baa · Nov 5
£28,232 GBP
$37,998 USD
View
9 more retailers have this diamond
Prices start from £22,848 GBPSave up to £5,384 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
6.09ct Round
£22,848 GBP