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Marquise|Natural|GIA

1.03ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6552665916

Certificate GIA 6552665916

Diamond specifications and retailer prices

From £1,594 GBP
As of November 6, 2026
Save £2,259 GBP (59%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,853 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552665916. Listed at 17 retailers as of November 5, 2026, with prices from £1,594 to £3,853, a £2,259 spread on the same certified stone. NZ Jewellers lists it at £3,853. 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

1.03
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle34.85°
OriginNatural
Grading LabGIA
CertificateGIA 6552665916
Dimensions10.33 × 5.35 × 3.35 mm
L/W Ratio1.93
Culet sizeNone
Key to symbols
Crystal, Feather, Twinning Wisp, Cloud, Needle
Top View
10.33 mm5.35 mm1.03 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6552665916
Side View
Table 60.0%Crown 34.85°Girdle: MED-THKPavilionCulet: NDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,853 GBP|Low: £1,665 GBP|High: £3,994 GBP|Avg: £2,153 GBP|-3.5%
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
November 6, 2026
Retailer 3£1,665 GBP
Retailer 4£1,700 GBP
Retailer 2£1,788 GBP
Retailer 6£1,830 GBP
Retailer 7£1,843 GBP
Retailer 14£1,843 GBP
Retailer 5£1,928 GBP
Retailer 15£1,947 GBP
Retailer 10£1,950 GBP
Retailer 13£1,998 GBP
Retailer 12£2,126 GBP
Retailer 9£2,249 GBP
Retailer 8£2,288 GBP
Retailer 11£3,220 GBP
NZ Jewellers£3,853 GBP

28 data points across 15 retailers

17 retailers£1,594 GBP to £3,853 GBP

B+
Cheapest Retailer
-
£1,594 GBP
B+
Retailer 2
-
£1,665 GBP
View
B+
Retailer 3
-
£1,700 GBP
View
Final sale: no returns
B+
Retailer 4
-
£1,788 GBP
View
B+
Retailer 5
-
£1,830 GBP
View
B+
Retailer 6
-
£1,843 GBP
View
Retailer 7
-
£1,843 GBP
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£1,928 GBP
View
B+
Retailer 9
-
£1,947 GBP
View
B+
Retailer 10
-
£1,950 GBP
View
B+
Retailer 11
-
£1,998 GBP
View
B+
Retailer 12
-
£2,126 GBP
View
Retailer 13
-
£2,216 GBP
View
Price last confirmed 31 days ago
B
Retailer 14
-
£2,249 GBP
View
B+
Retailer 15
-
£2,288 GBP
View
B
Retailer 16
-
£3,220 GBP
View
Most Expensive
B
NZ Jewellers
3d4f3ced-369d-481d-93f0-8ced17bbc1ae · Nov 5
£3,853 GBP
$5,157 USD
View
16 more retailers have this diamond
Prices start from £1,594 GBPSave up to £2,259 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.

B+
1.03ct Marquise
£1,594 GBP