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Marquise|Natural|GIA

1.00ct F SI1 Marquise Natural Diamond

ID • F/SI1 • GIA 6555941974

Certificate GIA 6555941974

Diamond specifications and retailer prices

From £1,600 GBP
As of November 4, 2026
Save £2,676 GBP (63%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £4,276 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555941974. Listed at 9 retailers as of November 4, 2026, with prices from £1,600 to £4,276, a £2,676 spread on the same certified stone. NZ Jewellers lists it at £4,276. 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
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555941974
Dimensions9.33 × 5.21 × 3.38 mm
L/W Ratio1.79
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal
Top View
9.33 mm5.21 mm1.00 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555941974
Side View
Table 62.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 64.9%

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 4
Current: £4,276 GBP|Low: £1,600 GBP|High: £4,276 GBP|Avg: £2,138 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£1,600 GBP
Retailer 10£1,835 GBP
Retailer 7£1,853 GBP
Retailer 8£1,938 GBP
Retailer 11£1,950 GBP
Retailer 3£1,972 GBP
Retailer 4£1,984 GBP
Retailer 5£2,137 GBP
Retailer 2£2,202 GBP
Retailer 6£2,496 GBP
NZ Jewellers£4,276 GBP

3 data points across 11 retailers

9 retailers£1,600 GBP to £4,276 GBP

A
Cheapest Retailer
-
£1,600 GBP
A
Retailer 2
-
£1,853 GBP
View
A
Retailer 3
-
£1,938 GBP
View
A
Retailer 4
-
£1,950 GBP
View
A
Retailer 5
-
£1,984 GBP
View
A
Retailer 6
-
£2,137 GBP
View
B+
Retailer 7
-
£2,202 GBP
View
B+
Retailer 8
-
£2,496 GBP
View
Most Expensive
B
NZ Jewellers
15e13424-0202-4e24-88c0-e94ad1dc42dd · Nov 5
£4,276 GBP
$5,723 USD
View
8 more retailers have this diamond
Prices start from £1,600 GBPSave up to £2,676 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
£1,600 GBP