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Marquise|Natural|GIA

0.50ct G SI2 Marquise Natural Diamond

EX • G/SI2 • GIA 3565193131

Certificate GIA 3565193131

Diamond specifications and retailer prices

From £329 GBP
As of November 2, 2026
Save £1,008 GBP (75%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,337 GBP at NZ Jewellers · As of November 3, 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 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 3565193131. Listed at 17 retailers as of November 2, 2026, with prices from £329 to £1,337, a £1,008 spread on the same certified stone. NZ Jewellers lists it at £1,337. 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
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37.5°
Pavilion angle40.9°
OriginNatural
Grading LabGIA
CertificateGIA 3565193131
Dimensions7.73 × 4.18 × 2.71 mm
L/W Ratio1.85
Girdle conditionFaceted
Culet sizeNone
Top View
7.73 mm4.18 mm0.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 3565193131
Side View
Table 58.0%Crown 37.5°Girdle: MED-VTKPavilion 40.9°Culet: NoneDepth 64.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,337 GBP|Low: £329 GBP|High: £1,343 GBP|Avg: £549 GBP|-0.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
November 3, 2026
Retailer 13£329 GBP
Retailer 10£373 GBP
Retailer 5£393 GBP
Retailer 9£396 GBP
Retailer 4£426 GBP
Retailer 3£459 GBP
Retailer 18£459 GBP
Retailer 8£461 GBP
Retailer 16£492 GBP
Retailer 7£522 GBP
Retailer 11£522 GBP
Retailer 15£527 GBP
Retailer 17£533 GBP
Retailer 6£565 GBP
Retailer 2£594 GBP
Retailer 12£613 GBP
Retailer 14£983 GBP
NZ Jewellers£1,337 GBP

26 data points across 18 retailers

17 retailers£329 GBP to £1,337 GBP

A
Cheapest Retailer
-
£329 GBP
A
Retailer 2
-
£373 GBP
View
A
Retailer 3
-
£396 GBP
View
A
Retailer 4
-
£426 GBP
View
Retailer 5
-
£459 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£459 GBP
View
Retailer 7
-
£461 GBP
View
Price last confirmed 10 days ago
A
Retailer 8
-
£492 GBP
View
A
Retailer 9
-
£522 GBP
View
A
Retailer 10
-
£522 GBP
View
A
Retailer 11
-
£527 GBP
View
A
Retailer 12
-
£533 GBP
View
B+
Retailer 13
-
£565 GBP
View
B+
Retailer 14
-
£594 GBP
View
B+
Retailer 15
-
£613 GBP
View
B
Retailer 16
-
£983 GBP
View
Most Expensive
B
NZ Jewellers
c0f936e5-6a7d-415a-b5f7-31d8ef9c91c6 · Nov 3
£1,337 GBP
$1,789 USD
View
16 more retailers have this diamond
Prices start from £329 GBPSave up to £1,008 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
£329 GBP