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Round|Natural|IGI

1.25ct L SI1 Round Natural Diamond

EX • L/SI1 • IGI 713558338

Shape and cutting style on the report: Round brilliant

Certificate IGI 713558338

Diamond specifications and retailer prices

From £996 GBP
As of November 4, 2026
Save £492 GBP (33%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,719 GBP at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 713558338. Listed at 10 retailers as of November 4, 2026, with a 49% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.25
Carat
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 713558338
Dimensions6.87 × 6.91 × 4.25 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.87 mm6.91 mm1.25 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 713558338
Side View
Table 59.0%Crown 34.9°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £1,312 GBP|Low: £996 GBP|High: £1,515 GBP|Avg: £1,221 GBP|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 3£996 GBP
Retailer 5£1,077 GBP
Retailer 4£1,148 GBP
Retailer 1£1,312 GBP
Retailer 2£1,488 GBP

34 data points across 5 retailers

10 retailers£996 GBP to £1,488 GBP

A
Cheapest Retailer
-
£996 GBP
A
Retailer 2
-
£1,077 GBP
View
Retailer 3
-
£1,115 GBP
View
Price last confirmed 25 days ago
Retailer 4
-
£1,115 GBP
View
Price last confirmed 30 days ago
Retailer 5
-
£1,138 GBP
View
Price last confirmed 38 days ago
A
Retailer 6
-
£1,148 GBP
View
Retailer 7
-
£1,287 GBP
View
Price last confirmed 28 days ago
A
Retailer 8
-
£1,312 GBP
View
B+
Retailer 9
-
£1,488 GBP
View
Most Expensive
NZ Jewellers
81827c3d-c1c4-4951-a357-350d50c7c18c · Oct 6
£2,719 GBP
$3,660 USD
View
Price last confirmed 31 days ago
9 more retailers have this diamond
Prices start from £996 GBPSave up to £492 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
1.25ct Round
£996 GBP