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Round|Natural|IGI

1.40ct L SI2 Round Natural Diamond

EX • L/SI2 • IGI 389929923

Shape and cutting style on the report: Round brilliant

Certificate IGI 389929923

Diamond specifications and retailer prices

From £1,257 GBP
As of November 4, 2026
Save £2,109 GBP (63%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,366 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.4ct natural round diamond

This 1.4ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 389929923. Listed at 11 retailers as of November 4, 2026, with prices from £1,257 to £3,366, a £2,109 spread on the same certified stone. NZ Jewellers lists it at £3,366. 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

1.40
Carat
L
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 389929923
Dimensions7.06 × 7.10 × 4.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
7.06 mm7.10 mm1.40 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 389929923
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 63.0%

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 4
Current: £3,366 GBP|Low: £901 GBP|High: £3,366 GBP|Avg: £1,568 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 5£901 GBP
Retailer 4£1,257 GBP
Retailer 9£1,349 GBP
Retailer 2£1,357 GBP
Retailer 7£1,380 GBP
Retailer 11£1,380 GBP
Retailer 13£1,389 GBP
Retailer 8£1,444 GBP
Retailer 10£1,482 GBP
Retailer 12£1,592 GBP
Retailer 3£1,663 GBP
Retailer 6£1,875 GBP
NZ Jewellers£3,366 GBP

23 data points across 13 retailers

11 retailers£1,257 GBP to £3,366 GBP

A
Cheapest Retailer
-
£1,257 GBP
B+
Retailer 2
-
£1,349 GBP
View
A
Retailer 3
-
£1,357 GBP
View
Retailer 4
-
£1,380 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£1,380 GBP
View
B+
Retailer 6
-
£1,389 GBP
View
B+
Retailer 7
-
£1,444 GBP
View
B+
Retailer 8
-
£1,482 GBP
View
B+
Retailer 9
-
£1,592 GBP
View
B+
Retailer 10
-
£1,875 GBP
View
Most Expensive
C
NZ Jewellers
ee74db3a-1eda-464a-86c6-806545a41ac9 · Nov 5
£3,366 GBP
$4,530 USD
View
10 more retailers have this diamond
Prices start from £1,257 GBPSave up to £2,109 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
1.40ct Round
£1,257 GBP