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Round|Natural|GIA

3.09ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 2456631024

Certificate GIA 2456631024

Diamond specifications and retailer prices

From £11,031 GBP
As of November 4, 2026
Save £4,368 GBP (28%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £15,399 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 3.09ct natural round diamond

This 3.09ct natural round sits in the three to five carat band, graded M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2456631024. Listed at 10 retailers as of November 4, 2026, with prices from £11,031 to £15,399, a £4,368 spread on the same certified stone. NZ Jewellers lists it at £15,399. 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

3.09
Carat
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 2456631024
Dimensions9.32 × 9.35 × 5.73 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
9.32 mm9.35 mm3.09 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2456631024
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.4%

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 4
Current: £15,399 GBP|Low: £10,821 GBP|High: £21,619 GBP|Avg: £13,691 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£10,821 GBP
Retailer 11£11,031 GBP
Retailer 6£11,999 GBP
Retailer 5£12,799 GBP
Retailer 8£12,999 GBP
Retailer 4£13,103 GBP
Retailer 10£13,330 GBP
Retailer 7£13,499 GBP
Retailer 2£13,993 GBP
NZ Jewellers£15,399 GBP
Retailer 3£21,619 GBP

26 data points across 11 retailers

10 retailers£11,031 GBP to £15,399 GBP

A
Cheapest Retailer
-
£11,031 GBP
B+
Retailer 2
-
£11,750 GBP
View
Retailer 3
-
£11,999 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£12,799 GBP
View
B+
Retailer 5
-
£12,999 GBP
View
B+
Retailer 6
-
£13,103 GBP
View
B+
Retailer 7
-
£13,330 GBP
View
B
Retailer 8
-
£13,499 GBP
View
B
Retailer 9
-
£13,993 GBP
View
Most Expensive
B
NZ Jewellers
987289b8-fbd6-4892-9cfe-8884fa1f47ee · Nov 5
£15,399 GBP
$20,726 USD
View
9 more retailers have this diamond
Prices start from £11,031 GBPSave up to £4,368 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
3.09ct Round
£11,031 GBP