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Marquise|Natural|IGI

1.02ct J SI1 Marquise Natural Diamond

VG • J/SI1 • IGI 803629414

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 803629414

Diamond specifications and retailer prices

From £1,161 GBP
As of November 6, 2026
Save £1,993 GBP (63%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,154 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 803629414. Listed at 17 retailers as of November 5, 2026, with prices from £1,161 to £3,154, a £1,993 spread on the same certified stone. NZ Jewellers lists it at £3,154. 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
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.6°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 803629414
Dimensions9.92 × 5.19 × 3.35 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Top View
9.92 mm5.19 mm1.02 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629414
Side View
Table 62.0%Crown 39.6°Girdle: STK-THKPavilion 40.9°Culet: NoneDepth 64.5%

Caratlytics Score

How it works →
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 6
Current: £3,154 GBP|Low: £1,161 GBP|High: £3,218 GBP|Avg: £1,566 GBP|-2.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 9£1,161 GBP
Retailer 2£1,175 GBP
Retailer 10£1,236 GBP
Retailer 5£1,293 GBP
Retailer 6£1,304 GBP
Retailer 8£1,319 GBP
Retailer 16£1,341 GBP
Retailer 3£1,353 GBP
Retailer 7£1,355 GBP
Retailer 11£1,376 GBP
Retailer 12£1,437 GBP
Retailer 13£1,470 GBP
Retailer 14£1,578 GBP
Retailer 4£1,647 GBP
Retailer 15£2,259 GBP
NZ Jewellers£3,154 GBP

32 data points across 16 retailers

17 retailers£1,161 GBP to £3,154 GBP

A
Cheapest Retailer
-
£1,161 GBP
A
Retailer 2
-
£1,175 GBP
View
Final sale: no returns
A
Retailer 3
-
£1,236 GBP
View
A
Retailer 4
-
£1,293 GBP
View
B+
Retailer 5
-
£1,304 GBP
View
Retailer 6
-
£1,319 GBP
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£1,329 GBP
View
B+
Retailer 8
-
£1,341 GBP
View
B+
Retailer 9
-
£1,353 GBP
View
B+
Retailer 10
-
£1,355 GBP
View
B+
Retailer 11
-
£1,376 GBP
View
B+
Retailer 12
-
£1,437 GBP
View
B+
Retailer 13
-
£1,470 GBP
View
B+
Retailer 14
-
£1,578 GBP
View
B+
Retailer 15
-
£1,647 GBP
View
B
Retailer 16
-
£2,259 GBP
View
Most Expensive
C
NZ Jewellers
c637be51-bcd9-4001-aeef-57a905e8dd0c · Nov 5
£3,154 GBP
$4,222 USD
View
16 more retailers have this diamond
Prices start from £1,161 GBPSave up to £1,993 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
£1,161 GBP