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Marquise|Natural|GIA

0.50ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 2557735757

Certificate GIA 2557735757

Diamond specifications and retailer prices

From £295 GBP
$396 USD
As of November 2, 2026
Save £683 GBP (70%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £1,551 GBP at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557735757. Listed at 10 retailers as of November 2, 2026, with a 231% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.50
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557735757
Dimensions7.46 × 4.09 × 2.64 mm
L/W Ratio1.82
Girdle conditionVery Thick to Extremely Thick
Key to symbols
Feather
Top View
7.46 mm4.09 mm0.50 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557735757
Side View
Table 58.0%CrownGirdle: VTK-XTKPavilionCulet: NoneDepth 64.6%

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 2
Current: £632 GBP|Low: £286 GBP|High: £1,153 GBP|Avg: £514 GBP|-4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 7£295 GBP
Retailer 2£315 GBP
Retailer 5£362 GBP
Retailer 4£445 GBP
Retailer 6£445 GBP
Retailer 1£632 GBP
Retailer 3£978 GBP

44 data points across 7 retailers

10 retailers£295 GBP to £978 GBP

A
Cheapest Retailer
-
£295 GBP
$396 USD
Final sale: no returns
A
Retailer 2
-
£315 GBP
₹40,251 INR
View
A
Retailer 3
-
£362 GBP
HK$3,800 HKD
View
A
Retailer 4
-
£445 GBP
$597 USD
View
A
Retailer 5
-
£445 GBP
SGD 807 SGD
View
Retailer 6
-
£484 GBP
$650 USD
View
Price last confirmed 33 days ago
Retailer 7
-
£495 GBP
$664 USD
View
Price last confirmed 26 days ago
B+
Retailer 8
-
£632 GBP
View
B
Retailer 9
-
£978 GBP
View
Most Expensive
NZ Jewellers
4986ef1d-02d4-45db-aca3-0243b5e8706b · Oct 6
£1,551 GBP
$2,082 USD
View
Price last confirmed 27 days ago
9 more retailers have this diamond
Prices start from £295 GBPSave up to £683 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
0.50ct Marquise
£295 GBP