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Round|Natural|IGI

1.27ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 722558728

Shape and cutting style on the report: Round brilliant

Certificate IGI 722558728

Diamond specifications and retailer prices

From £1,500 GBP
$2,010 USD
As of October 28, 2026
Save £1,971 GBP (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,471 GBP at NZ Jewellers · As of October 27, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 722558728. Listed at 11 retailers as of October 27, 2026, with prices from £1,500 to £3,471, a £1,971 spread on the same certified stone. NZ Jewellers lists it at £3,471. 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 722558728
Dimensions6.85 × 6.88 × 4.28 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Top View
6.85 mm6.88 mm1.27 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 722558728
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.4%

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: Oct 28
Current: £3,471 GBP|Low: £1,500 GBP|High: £3,471 GBP|Avg: £2,043 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
October 28, 2026
Retailer 8£1,500 GBP
Retailer 5£1,584 GBP
Retailer 10£1,628 GBP
Retailer 9£1,661 GBP
Retailer 11£1,661 GBP
Retailer 7£1,737 GBP
Retailer 3£1,764 GBP
Retailer 12£1,916 GBP
Retailer 4£1,990 GBP
Retailer 2£2,070 GBP
Retailer 6£2,913 GBP
NZ Jewellers£3,471 GBP

21 data points across 12 retailers

11 retailers£1,500 GBP to £3,471 GBP

A
Cheapest Retailer
-
£1,500 GBP
$2,010 USD
A
Retailer 2
-
£1,584 GBP
View
A
Retailer 3
-
£1,628 GBP
$2,182 USD
View
A
Retailer 4
-
£1,661 GBP
$2,225 USD
View
Retailer 5
-
£1,661 GBP
$2,225 USD
View
Price last confirmed 19 days ago
A
Retailer 6
-
£1,737 GBP
$2,327 USD
View
A
Retailer 7
-
£1,764 GBP
$2,364 USD
View
A
Retailer 8
-
£1,916 GBP
$2,567 USD
View
A
Retailer 9
-
£2,070 GBP
€2,642 EUR
View
B+
Retailer 10
-
£2,913 GBP
View
Most Expensive
B
NZ Jewellers
e363ac91-d48e-44a0-bcad-6ccbbdf1bddd · Oct 27
£3,471 GBP
$4,651 USD
View
10 more retailers have this diamond
Prices start from £1,500 GBPSave up to £1,971 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
£1,500 GBP