Marquise|Natural|GIA

0.50ct G SI2 Marquise Natural Diamond

EX • G/SI2 • GIA 2567001010

Certificate GIA 2567001010

Diamond specifications and retailer prices

From £391 GBP
As of November 6, 2026
Save £674 GBP (63%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,502 GBP at NZ Jewellers · As of September 28, 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 2567001010. Listed at 20 retailers as of November 4, 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
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2567001010
Dimensions7.35 × 4.26 × 2.65 mm
L/W Ratio1.73
Key to symbols
Crystal
Top View
7.35 mm4.26 mm0.50 ctG / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2567001010
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.1%

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: £1,449 GBP|Low: £373 GBP|High: £1,502 GBP|Avg: £651 GBP|-3.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11£391 GBP
Retailer 8£426 GBP
Retailer 10£462 GBP
Retailer 12£480 GBP
Retailer 9£498 GBP
Retailer 3£533 GBP
Retailer 4£533 GBP
Retailer 5£563 GBP
Retailer 7£579 GBP
Retailer 2£678 GBP
Retailer 6£1,065 GBP
NZ Jewellers£1,449 GBP

43 data points across 12 retailers

20 retailers£391 GBP to £1,065 GBP

A
Cheapest Retailer
-
£391 GBP
A
Retailer 2
-
£426 GBP
View
Final sale: no returns
Retailer 3
-
£462 GBP
View
Price last confirmed 17 days ago
Retailer 4
-
£479 GBP
View
Price last confirmed 44 days ago
Retailer 5
-
£479 GBP
View
Price last confirmed 47 days ago
Retailer 6
-
£480 GBP
View
Price last confirmed 10 days ago
Retailer 7
-
£498 GBP
View
Price last confirmed 21 days ago
Retailer 8
-
£498 GBP
View
Price last confirmed 8 days ago
Retailer 9
-
£533 GBP
View
Price last confirmed 16 days ago
Retailer 10
-
£533 GBP
View
Price last confirmed 19 days ago
Retailer 11
-
£553 GBP
View
Price last confirmed 45 days ago
Retailer 12
-
£553 GBP
View
Price last confirmed 38 days ago
B+
Retailer 13
-
£563 GBP
View
B+
Retailer 14
-
£579 GBP
View
B
Retailer 15
-
£678 GBP
View
B
Retailer 16
-
£1,065 GBP
View
Retailer 17
-
£1,449 GBP
View
Price last confirmed 16 days ago
Retailer 18
-
£1,502 GBP
View
Price last confirmed 47 days ago
Retailer 19
-
£1,502 GBP
View
Price last confirmed 50 days ago
Most Expensive
NZ Jewellers
38b610ea-df9e-4d98-a668-1835e86c03f9 · Sep 28
£1,502 GBP
$2,011 USD
View
Price last confirmed 39 days ago
19 more retailers have this diamond
Prices start from £391 GBPSave up to £674 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
£391 GBP