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Marquise|Natural|GIA

0.50ct F SI1 Marquise Natural Diamond

ID • F/SI1 • GIA 2557610480

Certificate GIA 2557610480

Diamond specifications and retailer prices

From £347 GBP
$465 USD
As of November 2, 2026
Save £1,200 GBP (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,721 GBP at NZ Jewellers · As of September 20, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557610480. Listed at 12 retailers as of October 30, 2026, with a 346% 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2557610480
Dimensions7.74 × 4.06 × 2.64 mm
L/W Ratio1.91
Girdle conditionVery Thick
Top View
7.74 mm4.06 mm0.50 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2557610480
Side View
Table 60.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 65.0%

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: £1,546 GBP|Low: £342 GBP|High: £1,721 GBP|Avg: £750 GBP|-10.1%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 11£347 GBP
Retailer 2£369 GBP
Retailer 9£503 GBP
Retailer 10£583 GBP
Retailer 4£603 GBP
Retailer 8£618 GBP
Retailer 6£703 GBP
Retailer 7£761 GBP
Retailer 3£810 GBP
Retailer 5£1,139 GBP
NZ Jewellers£1,546 GBP

37 data points across 11 retailers

12 retailers£347 GBP to £1,546 GBP

A
Cheapest Retailer
-
£347 GBP
$465 USD
Final sale: no returns
A
Retailer 2
-
£369 GBP
₹47,181 INR
View
A
Retailer 3
-
£503 GBP
$675 USD
View
B+
Retailer 4
-
£583 GBP
$783 USD
View
B+
Retailer 5
-
£603 GBP
View
B+
Retailer 6
-
£618 GBP
View
B+
Retailer 7
-
£703 GBP
€898 EUR
View
B+
Retailer 8
-
£761 GBP
ZAR 16,499 ZAR
View
Retailer 9
-
£810 GBP
A$1,672 AUD
View
Price last confirmed 29 days ago
B
Retailer 10
-
£1,139 GBP
View
B
Retailer 11
-
£1,546 GBP
$2,075 USD
View
Most Expensive
NZ Jewellers
41ac391f-054d-44d6-bd7c-67501b39083f · Sep 20
£1,721 GBP
$2,309 USD
View
Price under review
11 more retailers have this diamond
Prices start from £347 GBPSave up to £1,200 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
£347 GBP