Marquise|Natural|IGI

1.03ct H SI1 Marquise Natural Diamond

VG • H/SI1 • IGI 835674071

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 835674071

Diamond specifications and retailer prices

From £1,360 GBP
As of November 6, 2026
Save £539 GBP (28%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £3,423 GBP at NZ Jewellers · As of October 30, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 835674071. Listed at 9 retailers as of November 2, 2026, with a 40% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle32°
Pavilion angle40.7°
OriginNatural
Grading LabIGI
CertificateIGI 835674071
Dimensions10.04 × 5.31 × 3.39 mm
L/W Ratio1.89
Girdle conditionFaceted
Top View
10.04 mm5.31 mm1.03 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateIGI 835674071
Side View
Table 57.0%Crown 32°Girdle: STK-VTKPavilion 40.7°Culet: NoneDepth 63.8%

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 6
Current: £3,423 GBP|Low: £1,360 GBP|High: £3,423 GBP|Avg: £1,865 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8£1,360 GBP
Retailer 3£1,372 GBP
Retailer 7£1,403 GBP
Retailer 5£1,468 GBP
Retailer 9£1,560 GBP
Retailer 6£1,561 GBP
Retailer 2£1,898 GBP
Retailer 4£2,462 GBP
NZ Jewellers£3,423 GBP

25 data points across 9 retailers

9 retailers£1,360 GBP to £1,898 GBP

A
Cheapest Retailer
-
£1,360 GBP
Retailer 2
-
£1,372 GBP
View
Price last confirmed 8 days ago
Retailer 3
-
£1,403 GBP
View
Price last confirmed 12 days ago
Retailer 4
-
£1,468 GBP
View
Price last confirmed 13 days ago
B+
Retailer 5
-
£1,560 GBP
View
Retailer 6
-
£1,561 GBP
View
Price last confirmed 5 days ago
B+
Retailer 7
-
£1,898 GBP
View
Retailer 8
-
£2,462 GBP
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
c3ee1628-38f3-4681-b824-775ba5560e1b · Oct 30
£3,423 GBP
$4,581 USD
View
Price last confirmed 7 days ago
8 more retailers have this diamond
Prices start from £1,360 GBPSave up to £539 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
£1,360 GBP