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Round|Natural|IGI

1.30ct L SI1 Round Natural Diamond

EX • L/SI1 • IGI 648418570

Shape and cutting style on the report: Round brilliant

Certificate IGI 648418570

Diamond specifications and retailer prices

From £924 GBP
As of November 5, 2026
Save £2,223 GBP (71%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,147 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 648418570. Listed at 13 retailers as of November 5, 2026, with prices from £924 to £3,147, a £2,223 spread on the same certified stone. NZ Jewellers lists it at £3,147. 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
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle41.7°
OriginNatural
Grading LabIGI
CertificateIGI 648418570
Dimensions7.10 × 7.13 × 4.26 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
7.10 mm7.13 mm1.30 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 648418570
Side View
Table 61.0%Crown 32.4°Girdle: MediumPavilion 41.7°Culet: NoneDepth 59.8%

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: £1,251 GBP|Low: £924 GBP|High: £1,577 GBP|Avg: £1,293 GBP|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3£924 GBP
Retailer 7£1,175 GBP
Retailer 1£1,251 GBP
Retailer 5£1,265 GBP
Retailer 6£1,337 GBP
Retailer 2£1,565 GBP
Retailer 4£1,574 GBP

38 data points across 7 retailers

13 retailers£924 GBP to £3,147 GBP

A
Cheapest Retailer
-
£924 GBP
B+
Retailer 2
-
£1,175 GBP
View
A
Retailer 3
-
£1,251 GBP
View
B+
Retailer 4
-
£1,265 GBP
View
B+
Retailer 5
-
£1,290 GBP
View
Retailer 6
-
£1,290 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£1,337 GBP
View
B+
Retailer 8
-
£1,350 GBP
View
B+
Retailer 9
-
£1,392 GBP
View
B+
Retailer 10
-
£1,489 GBP
View
B+
Retailer 11
-
£1,565 GBP
View
B+
Retailer 12
-
£1,574 GBP
View
Most Expensive
C
NZ Jewellers
a80bdee7-d393-4042-866c-f5ead6037532 · Nov 5
£3,147 GBP
$4,235 USD
View
12 more retailers have this diamond
Prices start from £924 GBPSave up to £2,223 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
£924 GBP