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1.30ct G SI2 Round Natural Diamond

EX • G/SI2 • IGI 750555450

Shape and cutting style on the report: Round brilliant

Certificate IGI 750555450

Diamond specifications and retailer prices

From £1,891 GBP
As of November 1, 2026
Save £2,658 GBP (58%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,549 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 750555450. Listed at 14 retailers as of November 1, 2026, with prices from £1,891 to £4,549, a £2,658 spread on the same certified stone. NZ Jewellers lists it at £4,549. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 750555450
Dimensions6.98 × 7.04 × 4.26 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.98 mm7.04 mm1.30 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 750555450
Side View
Table 61.0%Crown 34.4°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.7%

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 1
Current: £4,549 GBP|Low: £1,841 GBP|High: £4,549 GBP|Avg: £2,524 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
Retailer 16
Retailer 17
November 6, 2026
Retailer 13£1,891 GBP
Retailer 15£1,949 GBP
Retailer 7£1,982 GBP
Retailer 2£1,996 GBP
Retailer 14£2,008 GBP
Retailer 17£2,080 GBP
Retailer 3£2,176 GBP
Retailer 5£2,176 GBP
Retailer 16£2,259 GBP
Retailer 6£2,282 GBP
Retailer 4£2,511 GBP
Retailer 11£2,519 GBP
Retailer 10£2,528 GBP
Retailer 8£2,608 GBP
Retailer 9£3,184 GBP
Retailer 12£3,639 GBP
NZ Jewellers£4,549 GBP

39 data points across 17 retailers

14 retailers£1,891 GBP to £4,549 GBP

A
Cheapest Retailer
-
£1,891 GBP
A
Retailer 2
-
£1,949 GBP
View
A
Retailer 3
-
£1,996 GBP
View
A
Retailer 4
-
£2,008 GBP
View
Final sale: no returns
A
Retailer 5
-
£2,080 GBP
View
A
Retailer 6
-
£2,176 GBP
View
Retailer 7
-
£2,176 GBP
View
Price last confirmed 8 days ago
A
Retailer 8
-
£2,259 GBP
View
A
Retailer 9
-
£2,282 GBP
View
A
Retailer 10
-
£2,511 GBP
View
A
Retailer 11
-
£2,519 GBP
View
A
Retailer 12
-
£2,528 GBP
View
B+
Retailer 13
-
£3,639 GBP
View
Most Expensive
B
NZ Jewellers
b75a2182-7de8-495a-a9b5-de4bb379f4b0 · Nov 5
£4,549 GBP
$6,123 USD
View
13 more retailers have this diamond
Prices start from £1,891 GBPSave up to £2,658 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
£1,891 GBP