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1.27ct D SI2 Round Natural Diamond

EX • D/SI2 • IGI 635475226

Shape and cutting style on the report: Round brilliant

Certificate IGI 635475226

Diamond specifications and retailer prices

From £2,024 GBP
$2,712 USD
As of October 30, 2026
Save £2,564 GBP (56%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £4,588 GBP at NZ Jewellers · As of October 30, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 635475226. Listed at 6 retailers as of October 30, 2026, with prices from £2,024 to £4,588, a £2,564 spread on the same certified stone. NZ Jewellers lists it at £4,588. 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabIGI
CertificateIGI 635475226
Dimensions6.89 × 6.85 × 4.35 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.89 mm6.85 mm1.27 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 635475226
Side View
Table 55.0%Crown 36.5°Girdle: MediumPavilion 40.8°Culet: NoneDepth 63.2%

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: Oct 30
Current: £4,588 GBP|Low: £2,024 GBP|High: £4,588 GBP|Avg: £2,630 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 15, 2026
Retailer 3£2,024 GBP
Retailer 4£2,195 GBP
Retailer 6£2,232 GBP
Retailer 2£2,279 GBP
Retailer 5£2,532 GBP
NZ Jewellers£4,588 GBP

3 data points across 6 retailers

6 retailers£2,024 GBP to £4,588 GBP

A
Cheapest Retailer
-
£2,024 GBP
$2,712 USD
A
Retailer 2
-
£2,195 GBP
$2,941 USD
View
A
Retailer 3
-
£2,232 GBP
$2,990 USD
View
A
Retailer 4
-
£2,279 GBP
$3,054 USD
View
A
Retailer 5
-
£2,532 GBP
$3,393 USD
View
Most Expensive
B
NZ Jewellers
010ce570-ccc6-44dd-a616-9dbe537fd914 · Oct 30
£4,588 GBP
$6,148 USD
View
5 more retailers have this diamond
Prices start from £2,024 GBPSave up to £2,564 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
£2,024 GBP