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Round|Natural|GIA

1.30ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2564026103

Certificate GIA 2564026103

Diamond specifications and retailer prices

From £1,922 GBP
As of November 6, 2026
Save £2,602 GBP (58%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,524 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.3ct natural round diamond

This 1.3ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2564026103. Listed at 9 retailers as of November 5, 2026, with prices from £1,922 to £4,524, a £2,602 spread on the same certified stone. NZ Jewellers lists it at £4,524. 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

1.30
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2564026103
Dimensions6.86 × 6.91 × 4.38 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle
Top View
6.86 mm6.91 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2564026103
Side View
Table 55.0%CrownGirdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 63.6%

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 6
Current: £4,524 GBP|Low: £1,922 GBP|High: £4,724 GBP|Avg: £2,976 GBP|-4.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£1,922 GBP
Retailer 5£2,202 GBP
Retailer 9£2,336 GBP
Retailer 6£2,597 GBP
Retailer 2£2,666 GBP
Retailer 7£2,696 GBP
Retailer 3£2,956 GBP
Retailer 4£4,331 GBP
NZ Jewellers£4,524 GBP

43 data points across 9 retailers

9 retailers£1,922 GBP to £4,524 GBP

A
Cheapest Retailer
-
£1,922 GBP
A
Retailer 2
-
£2,202 GBP
View
A
Retailer 3
-
£2,336 GBP
View
A
Retailer 4
-
£2,597 GBP
View
A
Retailer 5
-
£2,666 GBP
View
A
Retailer 6
-
£2,696 GBP
View
B+
Retailer 7
-
£2,956 GBP
View
B
Retailer 8
-
£4,331 GBP
View
Most Expensive
B
NZ Jewellers
c6d91330-ee31-4eda-9055-1da821fc3b0d · Nov 5
£4,524 GBP
$6,055 USD
View
8 more retailers have this diamond
Prices start from £1,922 GBPSave up to £2,602 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
1.30ct Round
£1,922 GBP