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Marquise|Natural|IGI

1.03ct L SI1 Marquise Natural Diamond

VG • L/SI1 • IGI 781603371

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 781603371

Diamond specifications and retailer prices

From £725 GBP
As of November 1, 2026
Save £1,183 GBP (62%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,907 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.03ct natural marquise diamond

This 1.03ct natural marquise sits in the classic one-carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 781603371. Listed at 10 retailers as of November 1, 2026, with prices from £725 to £1,907, a £1,183 spread on the same certified stone. NZ Jewellers lists it at £1,907. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.03
Carat
L
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle40.4°
Pavilion angle39.2°
OriginNatural
Grading LabIGI
CertificateIGI 781603371
Dimensions10.00 × 5.26 × 3.32 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizePointed
Top View
10.00 mm5.26 mm1.03 ctL / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 781603371
Side View
Table 61.0%Crown 40.4°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 63.1%

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: Nov 1
Current: £1,907 GBP|Low: £725 GBP|High: £1,991 GBP|Avg: £996 GBP|-4.2%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6£725 GBP
Retailer 3£750 GBP
Retailer 2£758 GBP
Retailer 7£782 GBP
Retailer 5£812 GBP
Retailer 9£903 GBP
Retailer 4£1,092 GBP
Retailer 8£1,117 GBP
NZ Jewellers£1,907 GBP

46 data points across 9 retailers

10 retailers£725 GBP to £1,907 GBP

A
Cheapest Retailer
-
£725 GBP
A
Retailer 2
-
£750 GBP
View
A
Retailer 3
-
£758 GBP
View
B+
Retailer 4
-
£782 GBP
View
B+
Retailer 5
-
£812 GBP
View
B+
Retailer 6
-
£902 GBP
View
B+
Retailer 7
-
£903 GBP
View
B+
Retailer 8
-
£1,092 GBP
View
B+
Retailer 9
-
£1,117 GBP
View
Most Expensive
C
NZ Jewellers
599b05b2-6131-41b3-b8f1-75761717e48d · Nov 5
£1,907 GBP
$2,553 USD
View
9 more retailers have this diamond
Prices start from £725 GBPSave up to £1,183 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
1.03ct Marquise
£725 GBP