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Marquise|Natural|GIA

0.50ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 2564439864

Certificate GIA 2564439864

Diamond specifications and retailer prices

From £207 GBP
As of November 6, 2026
Save £481 GBP (70%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £688 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2564439864. Listed at 7 retailers as of November 4, 2026, with prices from £207 to £688, a £481 spread on the same certified stone. MOH London lists it at £688. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564439864
Dimensions9.01 × 4.04 × 2.33 mm
L/W Ratio2.23
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Knot
Top View
9.01 mm4.04 mm0.50 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2564439864
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 57.7%

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: £688 GBP|Low: £207 GBP|High: £697 GBP|Avg: £383 GBP|-1.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2£207 GBP
Retailer 7£258 GBP
Retailer 5£332 GBP
Retailer 4£386 GBP
Retailer 6£395 GBP
Retailer 3£448 GBP
MOH London£688 GBP

38 data points across 7 retailers

7 retailers£207 GBP to £688 GBP

A
Cheapest Retailer
-
£207 GBP
A
Retailer 2
-
£258 GBP
View
A
Retailer 3
-
£332 GBP
View
B+
Retailer 4
-
£386 GBP
View
A
Retailer 5
-
£395 GBP
View
B+
Retailer 6
-
£448 GBP
View
Most Expensive
B
MOH London
0B115068E · Nov 4
£688 GBP
View
6 more retailers have this diamond
Prices start from £207 GBPSave up to £481 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
£207 GBP