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Marquise|Natural|GIA

0.50ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 3555698145

Certificate GIA 3555698145

Diamond specifications and retailer prices

From £439 GBP
HK$4,600 HKD
As of November 1, 2026
Save £756 GBP (63%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,622 GBP at NZ Jewellers · As of October 30, 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 3555698145. Listed at 17 retailers as of November 1, 2026, with a 172% 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
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle39.5°
OriginNatural
Grading LabGIA
CertificateGIA 3555698145
Dimensions8.51 × 4.01 × 2.51 mm
L/W Ratio2.12
Key to symbols
Twinning Wisp
Top View
8.51 mm4.01 mm0.50 ctF / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 3555698145
Side View
Table 56.0%Crown 35°Girdle: STK-ETKPavilion 39.5°Culet: NoneDepth 62.5%

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 1
Current: £1,622 GBP|Low: £420 GBP|High: £1,622 GBP|Avg: £668 GBP|+3.6%
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 2, 2026
Retailer 3£439 GBP
Retailer 4£477 GBP
Retailer 13£517 GBP
Retailer 15£517 GBP
Retailer 16£522 GBP
Retailer 14£537 GBP
Retailer 7£538 GBP
Retailer 8£597 GBP
Retailer 12£597 GBP
Retailer 5£604 GBP
Retailer 6£616 GBP
Retailer 2£618 GBP
Retailer 10£633 GBP
Retailer 9£736 GBP
Retailer 11£1,194 GBP
NZ Jewellers£1,622 GBP

28 data points across 16 retailers

17 retailers£439 GBP to £1,194 GBP

A
Cheapest Retailer
-
£439 GBP
HK$4,600 HKD
A
Retailer 2
-
£477 GBP
$640 USD
View
Final sale: no returns
A
Retailer 3
-
£517 GBP
$694 USD
View
A
Retailer 4
-
£517 GBP
$694 USD
View
A
Retailer 5
-
£522 GBP
$700 USD
View
A
Retailer 6
-
£537 GBP
$721 USD
View
B+
Retailer 7
-
£538 GBP
SGD 975 SGD
View
B+
Retailer 8
-
£597 GBP
$801 USD
View
Retailer 9
-
£597 GBP
$801 USD
View
Price last confirmed 15 days ago
B+
Retailer 10
-
£604 GBP
$811 USD
View
B+
Retailer 11
-
£616 GBP
$826 USD
View
B+
Retailer 12
-
£618 GBP
View
B+
Retailer 13
-
£633 GBP
View
Retailer 14
-
£692 GBP
View
Price last confirmed 40 days ago
B
Retailer 15
-
£736 GBP
€940 EUR
View
B
Retailer 16
-
£1,194 GBP
View
Most Expensive
NZ Jewellers
7df688dc-f948-42d9-b201-ae5376be34a6 · Oct 30
£1,622 GBP
$2,177 USD
View
Price under review
16 more retailers have this diamond
Prices start from £439 GBPSave up to £756 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
£439 GBP