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Marquise|Natural|IGI

1.02ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 814631406

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 814631406

Diamond specifications and retailer prices

From £1,617 GBP
As of November 6, 2026
Save £2,126 GBP (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,744 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.02ct natural marquise diamond

This 1.02ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 814631406. Listed at 12 retailers as of November 5, 2026, with prices from £1,617 to £3,744, a £2,126 spread on the same certified stone. NZ Jewellers lists it at £3,744. 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

1.02
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.2°
Pavilion angle35.5°
OriginNatural
Grading LabIGI
CertificateIGI 814631406
Dimensions10.31 × 5.29 × 2.98 mm
L/W Ratio1.95
Girdle conditionFaceted
Top View
10.31 mm5.29 mm1.02 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 814631406
Side View
Table 64.0%Crown 41.2°Girdle: STK-THKPavilion 35.5°Culet: NoneDepth 56.3%

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: £3,744 GBP|Low: £1,617 GBP|High: £3,744 GBP|Avg: £2,221 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6£1,617 GBP
Retailer 2£1,737 GBP
Retailer 7£1,786 GBP
Retailer 9£1,791 GBP
Retailer 10£1,791 GBP
Retailer 8£1,873 GBP
Retailer 4£1,928 GBP
Retailer 3£2,223 GBP
Retailer 5£3,136 GBP
NZ Jewellers£3,744 GBP

43 data points across 10 retailers

12 retailers£1,617 GBP to £3,744 GBP

A
Cheapest Retailer
-
£1,617 GBP
A
Retailer 2
-
£1,737 GBP
View
B+
Retailer 3
-
£1,786 GBP
View
B+
Retailer 4
-
£1,791 GBP
View
Retailer 5
-
£1,791 GBP
View
Price last confirmed 9 days ago
B+
Retailer 6
-
£1,873 GBP
View
B+
Retailer 7
-
£1,895 GBP
View
B+
Retailer 8
-
£1,928 GBP
View
B+
Retailer 9
-
£2,067 GBP
View
B+
Retailer 10
-
£2,223 GBP
View
B
Retailer 11
-
£3,136 GBP
View
Most Expensive
C
NZ Jewellers
3eac5340-a13c-4096-af2b-684dc56942ad · Nov 5
£3,744 GBP
$5,011 USD
View
11 more retailers have this diamond
Prices start from £1,617 GBPSave up to £2,126 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
1.02ct Marquise
£1,617 GBP