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1.57ct L SI1 Round Natural Diamond

EX • L/SI1 • IGI 743512789

Shape and cutting style on the report: Round brilliant

Certificate IGI 743512789

Diamond specifications and retailer prices

From £866 GBP
As of November 5, 2026
Save £1,741 GBP (67%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,607 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.57ct natural round diamond

This 1.57ct natural round sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI 743512789. Listed at 11 retailers as of November 5, 2026, with prices from £866 to £2,607, a £1,741 spread on the same certified stone. NZ Jewellers lists it at £2,607. 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

1.57
Carat
L
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.2°
OriginNatural
Grading LabIGI
CertificateIGI 743512789
Dimensions7.38 × 7.42 × 4.59 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
7.38 mm7.42 mm1.57 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 743512789
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.0%

Caratlytics Score

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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 5
Current: £2,607 GBP|Low: £866 GBP|High: £2,607 GBP|Avg: £1,259 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 4£866 GBP
Retailer 7£990 GBP
Retailer 3£1,068 GBP
Retailer 10£1,068 GBP
Retailer 8£1,118 GBP
Retailer 6£1,140 GBP
Retailer 2£1,164 GBP
Retailer 9£1,169 GBP
Retailer 11£1,233 GBP
Retailer 5£1,304 GBP
NZ Jewellers£2,607 GBP

45 data points across 11 retailers

11 retailers£866 GBP to £2,607 GBP

A
Cheapest Retailer
-
£866 GBP
A
Retailer 2
-
£990 GBP
View
Retailer 3
-
£1,068 GBP
View
Price last confirmed 8 days ago
A
Retailer 4
-
£1,068 GBP
View
A
Retailer 5
-
£1,118 GBP
View
A
Retailer 6
-
£1,140 GBP
View
A
Retailer 7
-
£1,164 GBP
View
A
Retailer 8
-
£1,169 GBP
View
A
Retailer 9
-
£1,233 GBP
View
A
Retailer 10
-
£1,304 GBP
View
Most Expensive
B
NZ Jewellers
7cdd6e91-03dd-427e-b4e9-bc40199fd98a · Nov 5
£2,607 GBP
$3,509 USD
View
10 more retailers have this diamond
Prices start from £866 GBPSave up to £1,741 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
1.57ct Round
£866 GBP