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Marquise|Natural|GIA

0.50ct G SI2 Marquise Natural Diamond

GD • G/SI2 • GIA 2568439850

Certificate GIA 2568439850

Diamond specifications and retailer prices

From £377 GBP
As of November 6, 2026
Save £1,202 GBP (76%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,579 GBP at NZ Jewellers · As of November 5, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2568439850. Listed at 17 retailers as of November 5, 2026, with prices from £377 to £1,579, a £1,202 spread on the same certified stone. NZ Jewellers lists it at £1,579. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.50
Carat
G
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2568439850
Dimensions7.58 × 4.12 × 2.66 mm
L/W Ratio1.84
Culet sizeNone
Key to symbols
Feather
Top View
7.58 mm4.12 mm0.50 ctG / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2568439850
Side View
Table 62.0%CrownGirdle: THK-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 6
Current: £1,579 GBP|Low: £377 GBP|High: £1,579 GBP|Avg: £654 GBP
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
November 6, 2026
Retailer 2£377 GBP
Retailer 6£430 GBP
Retailer 5£465 GBP
Retailer 11£504 GBP
Retailer 13£504 GBP
Retailer 3£508 GBP
Retailer 12£523 GBP
Retailer 14£581 GBP
Retailer 7£598 GBP
Retailer 4£614 GBP
Retailer 9£615 GBP
Retailer 8£713 GBP
Retailer 10£1,161 GBP
NZ Jewellers£1,579 GBP

27 data points across 14 retailers

17 retailers£377 GBP to £1,579 GBP

A
Cheapest Retailer
-
£377 GBP
B+
Retailer 2
-
£430 GBP
View
B+
Retailer 3
-
£465 GBP
View
Final sale: no returns
Retailer 4
-
£504 GBP
View
Price last confirmed 8 days ago
B+
Retailer 5
-
£504 GBP
View
Retailer 6
-
£508 GBP
View
Price last confirmed 9 days ago
B+
Retailer 7
-
£523 GBP
View
B+
Retailer 8
-
£531 GBP
View
B+
Retailer 9
-
£581 GBP
View
B+
Retailer 10
-
£581 GBP
View
B+
Retailer 11
-
£598 GBP
View
B
Retailer 12
-
£602 GBP
View
B
Retailer 13
-
£614 GBP
View
B
Retailer 14
-
£615 GBP
View
B
Retailer 15
-
£713 GBP
View
C
Retailer 16
-
£1,161 GBP
View
Most Expensive
C
NZ Jewellers
c54eb7a2-2c7e-459c-b772-567b3d11eee5 · Nov 5
£1,579 GBP
$2,114 USD
View
16 more retailers have this diamond
Prices start from £377 GBPSave up to £1,202 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
£377 GBP