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Round|Natural|GIA

1.30ct G SI1 Round Natural Diamond

EX • G/SI1

Diamond specifications and retailer prices

From £3,486 GBP
As of November 6, 2026
Save £4,016 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £7,502 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 14 retailers as of November 5, 2026, with prices from £3,486 to £7,502, a £4,016 spread on the same certified stone. NZ Jewellers lists it at £7,502. 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions6.95 × 7.00 × 4.33 mm
L/W Ratio1.01
Top View
6.95 mm7.00 mm1.30 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA
Side View
Table 59.0%CrownGirdle: MediumPavilionCulet: NoneDepth 62.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £7,502 GBP|Low: £3,438 GBP|High: £7,502 GBP|Avg: £4,580 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
Retailer 15
November 6, 2026
Retailer 15£3,486 GBP
Retailer 14£3,579 GBP
Retailer 12£3,751 GBP
Retailer 6£3,802 GBP
Retailer 10£4,064 GBP
Retailer 13£4,064 GBP
Retailer 2£4,292 GBP
Retailer 5£4,395 GBP
Retailer 11£4,410 GBP
Retailer 7£4,420 GBP
Retailer 4£4,643 GBP
Retailer 3£4,689 GBP
Retailer 8£4,749 GBP
Retailer 9£6,590 GBP
NZ Jewellers£7,502 GBP

28 data points across 15 retailers

14 retailers£3,486 GBP to £7,502 GBP

B+
Cheapest Retailer
-
£3,486 GBP
B+
Retailer 2
-
£3,579 GBP
View
B+
Retailer 3
-
£3,751 GBP
View
Final sale: no returns
B+
Retailer 4
-
£3,802 GBP
View
B+
Retailer 5
-
£4,064 GBP
View
B+
Retailer 6
-
£4,064 GBP
View
B
Retailer 7
-
£4,292 GBP
View
B
Retailer 8
-
£4,395 GBP
View
B+
Retailer 9
-
£4,420 GBP
View
B
Retailer 10
-
£4,643 GBP
View
B
Retailer 11
-
£4,689 GBP
View
B
Retailer 12
-
£4,749 GBP
View
B
Retailer 13
-
£6,590 GBP
View
Most Expensive
B
NZ Jewellers
5923ccf6-3b50-4d7c-9bdf-297e8ecbfbee · Nov 5
£7,502 GBP
$10,042 USD
View
13 more retailers have this diamond
Prices start from £3,486 GBPSave up to £4,016 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.

B+
1.30ct Round
£3,486 GBP