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Round|Natural|IGI

1.27ct M SI2 Round Natural Diamond

EX • M/SI2 • IGI 617454860

Shape and cutting style on the report: Round brilliant

Certificate IGI 617454860

Diamond specifications and retailer prices

From £616 GBP
As of November 6, 2026
Save £1,324 GBP (68%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,940 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.27ct natural round diamond

This 1.27ct 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 617454860. Listed at 10 retailers as of November 5, 2026, with prices from £616 to £1,940, a £1,324 spread on the same certified stone. NZ Jewellers lists it at £1,940. 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

1.27
Carat
M
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 617454860
Dimensions6.81 × 6.91 × 4.34 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.81 mm6.91 mm1.27 ctM / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 617454860
Side View
Table 58.0%Crown 36.4°GirdlePavilion 40.9°Culet: NoneDepth 63.4%

Caratlytics Score

How it works →
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 6
Current: £1,940 GBP|Low: £616 GBP|High: £1,940 GBP|Avg: £808 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2£616 GBP
Retailer 9£619 GBP
Retailer 10£619 GBP
Retailer 5£627 GBP
Retailer 6£643 GBP
Retailer 7£713 GBP
Retailer 8£714 GBP
Retailer 11£717 GBP
Retailer 3£744 GBP
Retailer 4£870 GBP
NZ Jewellers£1,940 GBP

41 data points across 11 retailers

10 retailers£616 GBP to £1,940 GBP

A
Cheapest Retailer
-
£616 GBP
Retailer 2
-
£619 GBP
View
Price last confirmed 8 days ago
A
Retailer 3
-
£619 GBP
View
A
Retailer 4
-
£627 GBP
View
A
Retailer 5
-
£643 GBP
View
B+
Retailer 6
-
£713 GBP
View
B+
Retailer 7
-
£714 GBP
View
B+
Retailer 8
-
£717 GBP
View
B+
Retailer 9
-
£870 GBP
View
Most Expensive
B
NZ Jewellers
2ae8909a-c4d7-497b-ba05-f7692d616448 · Nov 5
£1,940 GBP
$2,611 USD
View
9 more retailers have this diamond
Prices start from £616 GBPSave up to £1,324 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
1.27ct Round
£616 GBP