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1.24ct I SI2 Round Natural Diamond

EX • I/SI2 • IGI 651485340

Shape and cutting style on the report: Round brilliant

Certificate IGI 651485340

Diamond specifications and retailer prices

From £1,564 GBP
$2,095 USD
As of October 30, 2026
Save £2,055 GBP (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,618 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.24ct natural round diamond

This 1.24ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 651485340. Listed at 11 retailers as of October 30, 2026, with prices from £1,564 to £3,618, a £2,055 spread on the same certified stone. NZ Jewellers lists it at £3,618. 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

1.24
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle41.8°
OriginNatural
Grading LabIGI
CertificateIGI 651485340
Dimensions6.91 × 6.87 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.91 mm6.87 mm1.24 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 651485340
Side View
Table 60.0%Crown 33.8°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 61.6%

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 30
Current: £3,618 GBP|Low: £1,092 GBP|High: £3,618 GBP|Avg: £1,952 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
Retailer 13
Retailer 14
October 30, 2026
Retailer 5£1,092 GBP
Retailer 4£1,564 GBP
Retailer 9£1,598 GBP
Retailer 7£1,608 GBP
Retailer 6£1,705 GBP
Retailer 11£1,731 GBP
Retailer 13£1,731 GBP
Retailer 10£1,811 GBP
Retailer 14£1,835 GBP
Retailer 12£1,997 GBP
Retailer 2£2,027 GBP
Retailer 3£2,060 GBP
Retailer 8£2,976 GBP
NZ Jewellers£3,618 GBP

35 data points across 14 retailers

11 retailers£1,564 GBP to £3,618 GBP

A
Cheapest Retailer
-
£1,564 GBP
$2,095 USD
A
Retailer 2
-
£1,598 GBP
$2,141 USD
View
Final sale: no returns
A
Retailer 3
-
£1,608 GBP
View
A
Retailer 4
-
£1,731 GBP
$2,319 USD
View
A
Retailer 5
-
£1,731 GBP
$2,319 USD
View
A
Retailer 6
-
£1,811 GBP
$2,426 USD
View
A
Retailer 7
-
£1,835 GBP
$2,459 USD
View
B+
Retailer 8
-
£1,997 GBP
$2,676 USD
View
A
Retailer 9
-
£2,027 GBP
€2,586 EUR
View
B
Retailer 10
-
£2,976 GBP
View
Most Expensive
B
NZ Jewellers
166fa1de-cc65-49f2-bed7-5f1ddddaa092 · Oct 30
£3,618 GBP
$4,848 USD
View
10 more retailers have this diamond
Prices start from £1,564 GBPSave up to £2,055 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
1.24ct Round
£1,564 GBP