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1.30ct K SI2 Round Natural Diamond

EX • K/SI2 • IGI 723579389

Shape and cutting style on the report: Round brilliant

Certificate IGI 723579389

Diamond specifications and retailer prices

From £865 GBP
As of November 5, 2026
Save £1,805 GBP (68%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,670 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 723579389. Listed at 13 retailers as of November 5, 2026, with prices from £865 to £2,670, a £1,805 spread on the same certified stone. NZ Jewellers lists it at £2,670. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 723579389
Dimensions7.01 × 6.95 × 4.34 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.01 mm6.95 mm1.30 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 723579389
Side View
Table 56.0%Crown 36.2°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.1%

Caratlytics Score

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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 5
Current: £2,670 GBP|Low: £865 GBP|High: £2,670 GBP|Avg: £1,306 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
November 6, 2026
Retailer 7£865 GBP
Retailer 4£1,014 GBP
Retailer 10£1,014 GBP
Retailer 2£1,062 GBP
Retailer 3£1,094 GBP
Retailer 11£1,094 GBP
Retailer 5£1,138 GBP
Retailer 13£1,145 GBP
Retailer 12£1,263 GBP
Retailer 6£1,278 GBP
Retailer 9£1,487 GBP
Retailer 8£1,912 GBP
NZ Jewellers£2,670 GBP

41 data points across 13 retailers

13 retailers£865 GBP to £2,670 GBP

A
Cheapest Retailer
-
£865 GBP
A
Retailer 2
-
£1,014 GBP
View
A
Retailer 3
-
£1,014 GBP
View
A
Retailer 4
-
£1,062 GBP
View
Retailer 5
-
£1,094 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£1,094 GBP
View
A
Retailer 7
-
£1,138 GBP
View
A
Retailer 8
-
£1,145 GBP
View
B+
Retailer 9
-
£1,263 GBP
View
A
Retailer 10
-
£1,278 GBP
View
A
Retailer 11
-
£1,487 GBP
View
B+
Retailer 12
-
£1,912 GBP
View
Most Expensive
B
NZ Jewellers
8466b8dc-a2a6-4b65-bbc3-0a714fdfbfd0 · Nov 5
£2,670 GBP
$3,593 USD
View
12 more retailers have this diamond
Prices start from £865 GBPSave up to £1,805 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
£865 GBP