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1.40ct M SI1 Round Natural Diamond

VG • M/SI1 • IGI 649442596

Shape and cutting style on the report: Round brilliant

Certificate IGI 649442596

Diamond specifications and retailer prices

From £1,061 GBP
As of November 4, 2026
Save £380 GBP (26%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £1,441 GBP at Yorxs · As of November 4, 2026
View at Yorxs

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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 649442596. Listed at 2 retailers as of November 4, 2026, with prices from £1,061 to £1,441, a £380 spread on the same certified stone. Yorxs lists it at £1,441. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.40
Carat
M
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.7°
Pavilion angle41.9°
OriginNatural
Grading LabIGI
CertificateIGI 649442596
Dimensions6.91 × 7.00 × 4.52 mm
L/W Ratio1.01
Girdle conditionPARTLY FACETED
Culet sizePointed
Top View
6.91 mm7.00 mm1.40 ctM / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 649442596
Side View
Table 62.0%Crown 37.7°Girdle: MED-STKPavilion 41.9°Culet: NoneDepth 64.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 4
Current: £1,061 GBP|Low: £1,061 GBP|High: £1,513 GBP|Avg: £1,226 GBP|-2.9%
Retailer 1
Retailer 2
Yorxs
November 4, 2026
Retailer 1£1,061 GBP
Retailer 2£1,140 GBP
Yorxs£1,441 GBP

21 data points across 3 retailers

2 retailers£1,061 GBP to £1,441 GBP

B+
Cheapest Retailer
-
£1,061 GBP
Most Expensive
B+
Yorxs
10FA620BD · Nov 4
£1,441 GBP
€1,847 EUR
View
1 more retailer has this diamond
Prices start from £1,061 GBPSave up to £380 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.

B+
1.40ct Round
£1,061 GBP