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Marquise|Natural|GIA

0.50ct G SI2 Marquise Natural Diamond

EX • G/SI2 • GIA 6551531952

Certificate GIA 6551531952

Diamond specifications and retailer prices

From £338 GBP
As of November 6, 2026
Save £257 GBP (43%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £596 GBP at Diamond Heaven · As of November 6, 2026
View at Diamond Heaven

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 6551531952. Listed at 4 retailers as of November 6, 2026, with prices from £338 to £596, a £257 spread on the same certified stone. Diamond Heaven lists it at £596. 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
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551531952
Dimensions8.21 × 4.02 × 2.58 mm
L/W Ratio2.04
Girdle conditionSlightly Thick to Very Thick
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
8.21 mm4.02 mm0.50 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6551531952
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.2%

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 6
Current: £596 GBP|Low: £338 GBP|High: £674 GBP|Avg: £522 GBP|-6.5%
Diamond Heaven
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2£338 GBP
Retailer 4£542 GBP
Retailer 3£579 GBP
Diamond Heaven£596 GBP

46 data points across 4 retailers

4 retailers£338 GBP to £596 GBP

A
Cheapest Retailer
-
£338 GBP
B+
Retailer 2
-
£542 GBP
View
B+
Retailer 3
-
£579 GBP
View
Most Expensive
B+
Diamond Heaven
0.5SI2G6552CE0CN · Nov 6
£596 GBP
View
3 more retailers have this diamond
Prices start from £338 GBPSave up to £257 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
£338 GBP