CaratHunter
Plans
Round|Natural|IGI

1.40ct M SI2 Round Natural Diamond

EX • M/SI2 • IGI 669403397

Shape and cutting style on the report: Round brilliant

Certificate IGI 669403397

Diamond specifications and retailer prices

From £929 GBP
As of November 4, 2026
Save £1,516 GBP (62%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,445 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 M colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 669403397. Listed at 11 retailers as of November 4, 2026, with prices from £929 to £2,445, a £1,516 spread on the same certified stone. NZ Jewellers lists it at £2,445. 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
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.3°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 669403397
Dimensions7.05 × 7.07 × 4.45 mm
L/W Ratio1.00
Top View
7.05 mm7.07 mm1.40 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 669403397
Side View
Table 57.0%Crown 36.3°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 63.1%

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: £2,445 GBP|Low: £929 GBP|High: £2,445 GBP|Avg: £1,224 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 5£929 GBP
Retailer 3£1,002 GBP
Retailer 4£1,002 GBP
Retailer 8£1,002 GBP
Retailer 6£1,049 GBP
Retailer 7£1,068 GBP
Retailer 10£1,103 GBP
Retailer 9£1,157 GBP
Retailer 2£1,387 GBP
NZ Jewellers£2,445 GBP

39 data points across 10 retailers

11 retailers£929 GBP to £2,445 GBP

A
Cheapest Retailer
-
£929 GBP
Retailer 2
-
£1,002 GBP
View
Price last confirmed 8 days ago
B+
Retailer 3
-
£1,002 GBP
View
A
Retailer 4
-
£1,002 GBP
View
B+
Retailer 5
-
£1,049 GBP
View
B+
Retailer 6
-
£1,068 GBP
View
B+
Retailer 7
-
£1,103 GBP
View
B+
Retailer 8
-
£1,157 GBP
View
B+
Retailer 9
-
£1,387 GBP
View
Retailer 10
-
£2,445 GBP
View
Price last confirmed 66 days ago
Most Expensive
B
NZ Jewellers
19306c95-42e2-4e6a-9580-31da0659c227 · Nov 5
£2,445 GBP
$3,291 USD
View
10 more retailers have this diamond
Prices start from £929 GBPSave up to £1,516 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
£929 GBP