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Round|Natural|GIA

1.30ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2507458479

Certificate GIA 2507458479

Diamond specifications and retailer prices

From £2,375 GBP
As of November 6, 2026
Save £2,991 GBP (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £5,365 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2507458479. Listed at 18 retailers as of November 5, 2026, with prices from £2,375 to £5,365, a £2,991 spread on the same certified stone. NZ Jewellers lists it at £5,365. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2507458479
Dimensions6.96 × 6.92 × 4.33 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.96 mm6.92 mm1.30 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2507458479
Side View
Table 56.0%Crown 36.5°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.6%

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: £5,365 GBP|Low: £2,231 GBP|High: £5,365 GBP|Avg: £3,200 GBP
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
November 5, 2026
Retailer 3£2,375 GBP
Retailer 12£2,407 GBP
Retailer 11£2,476 GBP
Retailer 4£2,575 GBP
Retailer 13£2,788 GBP
Retailer 5£2,790 GBP
Retailer 6£2,790 GBP
Retailer 10£2,897 GBP
Retailer 8£3,102 GBP
Retailer 2£3,188 GBP
Retailer 7£3,257 GBP
Retailer 14£3,485 GBP
Retailer 9£5,136 GBP
NZ Jewellers£5,365 GBP

42 data points across 14 retailers

18 retailers£2,375 GBP to £5,365 GBP

A
Cheapest Retailer
-
£2,375 GBP
A
Retailer 2
-
£2,407 GBP
View
A
Retailer 3
-
£2,476 GBP
View
A
Retailer 4
-
£2,558 GBP
View
A
Retailer 5
-
£2,575 GBP
View
Final sale: no returns
B+
Retailer 6
-
£2,788 GBP
View
Retailer 7
-
£2,790 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£2,790 GBP
View
B+
Retailer 9
-
£2,897 GBP
View
B+
Retailer 10
-
£3,102 GBP
View
B+
Retailer 11
-
£3,121 GBP
View
B+
Retailer 12
-
£3,121 GBP
View
B+
Retailer 13
-
£3,188 GBP
View
B+
Retailer 14
-
£3,225 GBP
View
B+
Retailer 15
-
£3,257 GBP
View
Retailer 16
-
£3,485 GBP
View
Price last confirmed 14 days ago
B
Retailer 17
-
£5,136 GBP
View
Most Expensive
B
NZ Jewellers
58c1d35b-c7d0-4655-956d-9e93b4bf05cb · Nov 5
£5,365 GBP
$7,221 USD
View
17 more retailers have this diamond
Prices start from £2,375 GBPSave up to £2,991 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
£2,375 GBP