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Marquise|Natural|GIA

1.00ct G SI2 Marquise Natural Diamond

ID • G/SI2 • GIA 2556673343

Certificate GIA 2556673343

Diamond specifications and retailer prices

From £1,863 GBP
As of November 5, 2026
Save £2,605 GBP (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,468 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556673343. Listed at 15 retailers as of November 5, 2026, with prices from £1,863 to £4,468, a £2,605 spread on the same certified stone. NZ Jewellers lists it at £4,468. 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

1.00
Carat
G
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556673343
Dimensions9.59 × 5.24 × 3.36 mm
L/W Ratio1.83
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather, Needle, Natural
Top View
9.59 mm5.24 mm1.00 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556673343
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 64.1%

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 5
Current: £4,468 GBP|Low: £1,863 GBP|High: £4,468 GBP|Avg: £2,712 GBP|+1.0%
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 7, 2026
Retailer 7£1,863 GBP
Retailer 5£1,993 GBP
Retailer 15£2,021 GBP
Retailer 11£2,324 GBP
Retailer 13£2,413 GBP
Retailer 6£2,421 GBP
Retailer 12£2,502 GBP
Retailer 9£2,522 GBP
Retailer 14£2,637 GBP
Retailer 16£2,637 GBP
Retailer 3£2,681 GBP
Retailer 4£2,727 GBP
Retailer 8£2,774 GBP
Retailer 10£2,986 GBP
Retailer 2£4,267 GBP
NZ Jewellers£4,468 GBP

13 data points across 16 retailers

15 retailers£1,863 GBP to £4,468 GBP

A
Cheapest Retailer
-
£1,863 GBP
A
Retailer 2
-
£1,993 GBP
View
A
Retailer 3
-
£2,021 GBP
View
B+
Retailer 4
-
£2,324 GBP
View
B+
Retailer 5
-
£2,413 GBP
View
B+
Retailer 6
-
£2,421 GBP
View
B+
Retailer 7
-
£2,502 GBP
View
B+
Retailer 8
-
£2,522 GBP
View
B+
Retailer 9
-
£2,637 GBP
View
B+
Retailer 10
-
£2,637 GBP
View
B+
Retailer 11
-
£2,681 GBP
View
B+
Retailer 12
-
£2,727 GBP
View
B
Retailer 13
-
£2,986 GBP
View
B
Retailer 14
-
£4,267 GBP
View
Most Expensive
B
NZ Jewellers
3599e241-b50d-4bce-b33a-e540ff3e00e3 · Nov 5
£4,468 GBP
$5,981 USD
View
14 more retailers have this diamond
Prices start from £1,863 GBPSave up to £2,605 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
1.00ct Marquise
£1,863 GBP